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There are 540 CVE Records that match your search.

Name	Description
CVE-2024-31805	TOTOLINK EX200 V4.0.3c.7646_B20201211 allows attackers to start the Telnet service without authorization via the telnet_enabled parameter in the setTelnetCfg function.
CVE-2024-28093	The TELNET service of AdTran NetVanta 3120 18.01.01.00.E devices is enabled by default, and has default credentials for a root-level account.
CVE-2024-25734	An issue was discovered on WyreStorm Apollo VX20 devices before 1.3.58. The TELNET service prompts for a password only after a valid username is entered, which might make it easier for remote attackers to enumerate user accounts.
CVE-2024-22853	D-LINK Go-RT-AC750 GORTAC750_A1_FW_v101b03 has a hardcoded password for the Alphanetworks account, which allows remote attackers to obtain root access via a telnet session.
CVE-2024-22852	D-Link Go-RT-AC750 GORTAC750_A1_FW_v101b03 contains a stack-based buffer overflow via the function genacgi_main. This vulnerability allows attackers to enable telnet service via a specially crafted payload.
CVE-2024-21610	An Improper Handling of Exceptional Conditions vulnerability in the Class of Service daemon (cosd) of Juniper Networks Junos OS on MX Series allows an authenticated, network-based attacker with low privileges to cause a limited Denial of Service (DoS). In a scaled subscriber scenario when specific low privileged commands, received over NETCONF, SSH or telnet, are handled by cosd on behalf of mgd, the respective child management daemon (mgd) processes will get stuck. In case of (Netconf over) SSH this leads to stuck SSH sessions, so that when the connection-limit for SSH is reached new sessions can't be established anymore. A similar behavior will be seen for telnet etc. Stuck mgd processes can be monitored by executing the following command: user@host> show system processes extensive \| match mgd \| match sbwait This issue affects Juniper Networks Junos OS on MX Series: All versions earlier than 20.4R3-S9; 21.2 versions earlier than 21.2R3-S7; 21.3 versions earlier than 21.3R3-S5; 21.4 versions earlier than 21.4R3-S5; 22.1 versions earlier than 22.1R3-S4; 22.2 versions earlier than 22.2R3-S3; 22.3 versions earlier than 22.3R3-S2; 22.4 versions earlier than 22.4R3; 23.2 versions earlier than 23.2R1-S2, 23.2R2.
CVE-2024-1786	UNSUPPORTED WHEN ASSIGNED A vulnerability, which was classified as critical, has been found in D-Link DIR-600M C1 3.08. Affected by this issue is some unknown functionality of the component Telnet Service. The manipulation of the argument username leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-254576. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed immediately that the product is end-of-life. It should be retired and replaced.
CVE-2023-52026	TOTOlink EX1800T V9.1.0cu.2112_B20220316 was discovered to contain a remote command execution (RCE) vulnerability via the telnet_enabled parameter of the setTelnetCfg interface
CVE-2023-49409	Tenda AX3 V16.03.12.11 was discovered to contain a Command Execution vulnerability via the function /goform/telnet.
CVE-2023-49406	Tenda W30E V16.01.0.12(4843) was discovered to contain a Command Execution vulnerability via the function /goform/telnet.
CVE-2023-4464	A vulnerability, which was classified as critical, has been found in Poly Trio 8300, Trio 8500, Trio 8800, Trio C60, CCX 350, CCX 400, CCX 500, CCX 505, CCX 600, CCX 700, EDGE E100, EDGE E220, EDGE E300, EDGE E320, EDGE E350, EDGE E400, EDGE E450, EDGE E500, EDGE E550, VVX 101, VVX 150, VVX 201, VVX 250, VVX 300, VVX 301, VVX 310, VVX 311, VVX 350, VVX 400, VVX 401, VVX 410, VVX 411, VVX 450, VVX 500, VVX 501, VVX 600 and VVX 601. This issue affects some unknown processing of the component Diagnostic Telnet Mode. The manipulation leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. It is recommended to upgrade the affected component. The identifier VDB-249257 was assigned to this vulnerability.
CVE-2023-43119	An Access Control issue discovered in Extreme Networks Switch Engine (EXOS) before 32.5.1.5, also fixed in 22.7, 31.7.2 allows attackers to gain escalated privileges using crafted telnet commands via Redis server.
CVE-2023-41030	Hard-coded credentials in Juplink RX4-1500 versions V1.0.2 through V1.0.5 allow unauthenticated attackers to log in to the web interface or telnet service as the 'user' user.
CVE-2023-38132	LAN-W451NGR all versions provided by LOGITEC CORPORATION contains an improper access control vulnerability, which allows an unauthenticated attacker to log in to telnet service.
CVE-2023-38027	SpotCam Co., Ltd. SpotCam Sense’s hidden Telnet function has a vulnerability of OS command injection. An remote unauthenticated attacker can exploit this vulnerability to execute command injection attack to perform arbitrary system commands or disrupt service.
CVE-2023-38025	SpotCam Co., Ltd. SpotCam FHD 2’s hidden Telnet function has a vulnerability of OS command injection. An remote unauthenticated attacker can exploit this vulnerability to execute command injection attack to arbitrary system commands or disrupt service.
CVE-2023-38024	SpotCam Co., Ltd. SpotCam FHD 2’s hidden Telnet function has a vulnerability of using hard-coded Telnet credentials. An remote unauthenticated attacker can exploit this vulnerability to access the system to perform arbitrary system operations or disrupt service.
CVE-2023-34725	An issue was discovered in TechView LA-5570 Wireless Gateway 1.0.19_T53, allows physical attackers to gain escalated privileges via a telnet connection.
CVE-2023-30603	Hitron Technologies CODA-5310 Telnet function with the default account and password, and there is no warning or prompt to ask users to change the default password and account. An unauthenticated remote attackers can exploit this vulnerability to obtain the administrator’s privilege, resulting in performing arbitrary system operation or disrupt service.
CVE-2023-30602	Hitron Technologies CODA-5310’s Telnet function transfers sensitive data in plaintext. An unauthenticated remote attacker can exploit this vulnerability to access credentials of normal users and administrator.
CVE-2023-30351	Shenzen Tenda Technology IP Camera CP3 V11.10.00.2211041355 was discovered to contain a hard-coded default password for root which is stored using weak encryption. This vulnerability allows attackers to connect to the TELNET service (or UART) by using the exposed credentials.
CVE-2023-2790	A vulnerability classified as problematic has been found in TOTOLINK N200RE 9.3.5u.6255_B20211224. Affected is an unknown function of the file /squashfs-root/etc_ro/custom.conf of the component Telnet Service. The manipulation leads to password in configuration file. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. VDB-229374 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
CVE-2023-27533	A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system.
CVE-2023-25413	Aten PE8108 2.4.232 is vulnerable to Incorrect Access Control. The device allows unauthenticated access to Telnet and SNMP credentials.
CVE-2023-25070	Cleartext transmission of sensitive information exists in SkyBridge MB-A100/110 firmware Ver. 4.2.0 and earlier. If the telnet connection is enabled, a remote unauthenticated attacker may eavesdrop on or alter the administrator's communication to the product.
CVE-2023-24155	TOTOLINK T8 V4.1.5cu was discovered to contain a hard code password for the telnet service which is stored in the component /web_cste/cgi-bin/product.ini.
CVE-2023-24147	TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a hard code password for the telnet service which is stored in the component /etc/config/product.ini.
CVE-2023-23451	The Flexi Classic and Flexi Soft Gateways SICK UE410-EN3 FLEXI ETHERNET GATEW. with serial number <=2311xxxx all Firmware versions, SICK UE410-EN1 FLEXI ETHERNET GATEW. with serial number <=2311xxxx all Firmware versions, SICK UE410-EN3S04 FLEXI ETHERNET GATEW. with serial number <=2311xxxx all Firmware versions, SICK UE410-EN4 FLEXI ETHERNET GATEW. with serial number <=2311xxxx all Firmware versions, SICK FX0-GENT00000 FLEXISOFT EIP GATEW. with serial number <=2311xxxx with Firmware <=V2.11.0, SICK FX0-GMOD00000 FLEXISOFT MOD GATEW. with serial number <=2311xxxx with Firmware <=V2.11.0, SICK FX0-GPNT00000 FLEXISOFT PNET GATEW. with serial number <=2311xxxx with Firmware <=V2.12.0, SICK FX0-GENT00030 FLEXISOFT EIP GATEW.V2 with serial number <=2311xxxx all Firmware versions, SICK FX0-GPNT00030 FLEXISOFT PNET GATEW.V2 with serial number <=2311xxxx all Firmware versions and SICK FX0-GMOD00010 FLEXISOFT MOD GW with serial number <=2311xxxx with Firmware <=V2.11.0 all have Telnet enabled by factory default. No password is set in the default configuration.
CVE-2023-22922	A buffer overflow vulnerability in the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could allow a remote unauthenticated attacker to cause DoS conditions by sending crafted packets if Telnet is enabled on a vulnerable device.
CVE-2023-22920	A security misconfiguration vulnerability exists in the Zyxel LTE3316-M604 firmware version V2.00(ABMP.6)C0 due to a factory default misconfiguration intended for testing purposes. A remote attacker could leverage this vulnerability to access an affected device using Telnet.
CVE-2023-22906	Hero Qubo HCD01_02_V1.38_20220125 devices allow TELNET access with root privileges by default, without a password.
CVE-2023-22316	Hidden functionality vulnerability in PIX-RT100 versions RT100_TEQ_2.1.1_EQ101 and RT100_TEQ_2.1.2_EQ101 allows a network-adjacent attacker to access the product via undocumented Telnet or SSH services.
CVE-2023-1834	Rockwell Automation was made aware that Kinetix 5500 drives, manufactured between May 2022 and January 2023, and are running v7.13 may have the telnet and FTP ports open by default. This could potentially allow attackers unauthorized access to the device through the open ports.
CVE-2023-1618	Active Debug Code vulnerability in Mitsubishi Electric Corporation MELSEC WS Series WS0-GETH00200 Serial number 2310 **** and prior allows a remote unauthenticated attacker to bypass authentication and illegally log into the affected module by connecting to it via telnet which is hidden function and is enabled by default when shipped from the factory. As a result, a remote attacker with unauthorized login can reset the module, and if certain conditions are met, he/she can disclose or tamper with the module's configuration or rewrite the firmware.
CVE-2023-0127	A command injection vulnerability in the firmware_update command, in the device's restricted telnet interface, allows an authenticated attacker to execute arbitrary commands as root.
CVE-2023-0053	SAUTER Controls Nova 200–220 Series with firmware version 3.3-006 and prior and BACnetstac version 4.2.1 and prior have only FTP and Telnet available for device management. Any sensitive information communicated through these protocols, such as credentials, is sent in cleartext. An attacker could obtain sensitive information such as user credentials to gain access to the system.
CVE-2023-0052	SAUTER Controls Nova 200–220 Series with firmware version 3.3-006 and prior and BACnetstac version 4.2.1 and prior allows the execution of commands without credentials. As Telnet and file transfer protocol (FTP) are the only protocols available for device management, an unauthorized user could access the system and modify the device configuration, which could result in the unauthorized user executing unrestricted malicious commands.
CVE-2023-0029	A vulnerability was found in Multilaser RE708 RE1200R4GC-2T2R-V3_v3411b_MUL029B. It has been rated as problematic. This issue affects some unknown processing of the component Telnet Service. The manipulation leads to denial of service. The attack may be initiated remotely. The identifier VDB-217169 was assigned to this vulnerability.
CVE-2022-48113	A vulnerability in TOTOLINK N200RE_v5 firmware V9.3.5u.6139 allows unauthenticated attackers to access the telnet service via a crafted POST request. Attackers are also able to leverage this vulnerability to login as root via hardcoded credentials.
CVE-2022-47210	The default console presented to users over telnet (when enabled) is restricted to a subset of commands. Commands issued at this console, however, appear to be fed directly into a system call or other similar function. This allows any authenticated user to execute arbitrary commands on the device.
CVE-2022-46637	Prolink router PRS1841 was discovered to contain hardcoded credentials for its Telnet and FTP services.
CVE-2022-46080	Nexxt Nebula 1200-AC 15.03.06.60 allows authentication bypass and command execution by using the HTTPD service to enable TELNET.
CVE-2022-45045	Multiple Xiongmai NVR devices, including MBD6304T V4.02.R11.00000117.10001.131900.00000 and NBD6808T-PL V4.02.R11.C7431119.12001.130000.00000, allow authenticated users to execute arbitrary commands as root, as exploited in the wild starting in approximately 2019. A remote and authenticated attacker, possibly using the default admin:tlJwpbo6 credentials, can connect to port 34567 and execute arbitrary operating system commands via a crafted JSON file during an upgrade request. Since at least 2021, Xiongmai has applied patches to prevent attackers from using this mechanism to execute telnetd.
CVE-2022-44932	An access control issue in Tenda A18 v15.13.07.09 allows unauthenticated attackers to access the Telnet service.
CVE-2022-44149	The web service on Nexxt Amp300 ARN02304U8 42.103.1.5095 and 80.103.2.5045 devices allows remote OS command execution by placing &telnetd in the JSON host field to the ping feature of the goform/sysTools component. Authentication is required
CVE-2022-4390	A network misconfiguration is present in versions prior to 1.0.9.90 of the NETGEAR RAX30 AX2400 series of routers. IPv6 is enabled for the WAN interface by default on these devices. While there are firewall restrictions in place that define access restrictions for IPv4 traffic, these restrictions do not appear to be applied to the WAN interface for IPv6. This allows arbitrary access to any services running on the device that may be inadvertently listening via IPv6, such as the SSH and Telnet servers spawned on ports 22 and 23 by default. This misconfiguration could allow an attacker to interact with services only intended to be accessible by clients on the local network.
CVE-2022-43552	A use after free vulnerability exists in curl <7.87.0. Curl can be asked to tunnel virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.
CVE-2022-43366	IP-COM EW9 V15.11.0.14(9732) allows unauthenticated attackers to access sensitive information via the checkLoginUser, ate, telnet, version, setDebugCfg, and boot interfaces.
CVE-2022-42915	curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request (HTTP proxies often only allow outgoing connections to specific port numbers, like 443 for HTTPS) and instead return a non-200 status code to the client. Due to flaws in the error/cleanup handling, this could trigger a double free in curl if one of the following schemes were used in the URL for the transfer: dict, gopher, gophers, ldap, ldaps, rtmp, rtmps, or telnet. The earliest affected version is 7.77.0.
CVE-2022-39028	telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a "telnet/tcp server failing (looping), service terminated" error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.
CVE-2022-38452	A command execution vulnerability exists in the hidden telnet service functionality of Netgear Orbi Router RBR750 4.6.8.5. A specially-crafted network request can lead to arbitrary command execution. An attacker can send a network request to trigger this vulnerability.
CVE-2022-38394	Use of hard-coded credentials for the telnet server of CentreCOM AR260S V2 firmware versions prior to Ver.3.3.7 allows a remote unauthenticated attacker to execute an arbitrary OS command.
CVE-2022-38094	OS command injection vulnerability in the telnet function of CentreCOM AR260S V2 firmware versions prior to Ver.3.3.7 allows a remote authenticated attacker to execute an arbitrary OS command.
CVE-2022-36159	Contec FXA3200 version 1.13 and under were discovered to contain a hard coded hash password for root stored in the component /etc/shadow. As the password strength is weak, it can be cracked in few minutes. Through this credential, a malicious actor can access the Wireless LAN Manager interface and open the telnet port then sniff the traffic or inject any malware.
CVE-2022-35846	An improper restriction of excessive authentication attempts vulnerability [CWE-307] in FortiTester Telnet port 2.3.0 through 3.9.1, 4.0.0 through 4.2.0, 7.0.0 through 7.1.0 may allow an unauthenticated attacker to guess the credentials of an admin user via a brute force attack.
CVE-2022-34869	Undocumented hidden command that can be executed from the telnet function of CentreCOM AR260S V2 firmware versions prior to Ver.3.3.7 allows a remote authenticated attacker to execute an arbitrary OS command.
CVE-2022-34572	An access control issue in Wavlink WiFi-Repeater RPTA2-77W.M4300.01.GD.2017Sep19 allows attackers to obtain the telnet password via accessing the page tftp.txt.
CVE-2022-33872	An improper neutralization of special elements used in an OS Command ('OS Command Injection') vulnerabilities [CWE-78] in Telnet login components of FortiTester 2.3.0 through 3.9.1, 4.0.0 through 4.2.0, 7.0.0 through 7.1.0 may allow an unauthenticated remote attacker to execute arbitrary command in the underlying shell.
CVE-2022-33323	Active Debug Code vulnerability in robot controller of Mitsubishi Electric Corporation industrial robot MELFA SD/SQ Series and MELFA F-Series allows a remote unauthenticated attacker to gain unauthorized access by authentication bypass through an unauthorized telnet login. As for the affected model names, controller types and firmware versions, see the Mitsubishi Electric's advisory which is listed in [References] section.
CVE-2022-3203	On ORing net IAP-420(+) with FW version 2.0m a telnet server is enabled by default and cannot permanently be disabled. You can connect to the device via LAN or WiFi with hardcoded credentials and get an administrative shell. These credentials are reset to defaults with every reboot.
CVE-2022-31808	A vulnerability has been identified in SiPass integrated AC5102 (ACC-G2) (All versions < V2.85.44), SiPass integrated ACC-AP (All versions < V2.85.43). Affected devices improperly sanitize user input on the telnet command line interface. This could allow an authenticated user to escalate privileges by injecting arbitrary commands that are executed with root privileges.
CVE-2022-31211	An issue was discovered in Infiray IRAY-A8Z3 1.0.957. There is a blank root password for TELNET by default.
CVE-2022-29965	The Emerson DeltaV Distributed Control System (DCS) controllers and IO cards through 2022-04-29 misuse passwords. Access to privileged operations on the maintenance port TELNET interface (23/TCP) on M-series and SIS (CSLS/LSNB/LSNG) nodes is controlled by means of utility passwords. These passwords are generated using a deterministic, insecure algorithm using a single seed value composed of a day/hour/minute timestamp with less than 16 bits of entropy. The seed value is fed through a lookup table and a series of permutation operations resulting in three different four-character passwords corresponding to different privilege levels. An attacker can easily reconstruct these passwords and thus gain access to privileged maintenance operations. NOTE: this is different from CVE-2014-2350.
CVE-2022-29963	The Emerson DeltaV Distributed Control System (DCS) controllers and IO cards through 2022-04-29 misuse passwords. TELNET on port 18550 provides access to a root shell via hardcoded credentials. This affects S-series, P-series, and CIOC/EIOC nodes. NOTE: this is different from CVE-2014-2350.
CVE-2022-29889	A hard-coded password vulnerability exists in the telnet functionality of Abode Systems, Inc. iota All-In-One Security Kit 6.9Z. Use of a hard-coded root password can lead to arbitrary command execution. An attacker can authenticate with hard-coded credentials to trigger this vulnerability.
CVE-2022-29644	TOTOLINK A3100R V4.1.2cu.5050_B20200504 and V4.1.2cu.5247_B20211129 were discovered to contain a hard coded password for the telnet service stored in the component /web_cste/cgi-bin/product.ini.
CVE-2022-28493	A vulnerability in TOTOLINK CP900 V6.3c.566 allows attackers to start the Telnet service,
CVE-2022-27947	NETGEAR R8500 1.0.2.158 devices allow remote authenticated users to execute arbitrary commands (such as telnetd) via shell metacharacters in the ipv6_fix.cgi ipv6_wan_ipaddr, ipv6_lan_ipaddr, ipv6_wan_length, or ipv6_lan_length parameter.
CVE-2022-27946	NETGEAR R8500 1.0.2.158 devices allow remote authenticated users to execute arbitrary commands (such as telnetd) via shell metacharacters in the sysNewPasswd and sysConfirmPasswd parameters to admin_account.cgi.
CVE-2022-27945	NETGEAR R8500 1.0.2.158 devices allow remote authenticated users to execute arbitrary commands (such as telnetd) via shell metacharacters in the sysNewPasswd and sysConfirmPasswd parameters to password.cgi.
CVE-2022-25219	A null byte interaction error has been discovered in the code that the telnetd_startup daemon uses to construct a pair of ephemeral passwords that allow a user to spawn a telnet service on the router, and to ensure that the telnet service persists upon reboot. By means of a crafted exchange of UDP packets, an unauthenticated attacker on the local network can leverage this null byte interaction error in such a way as to make those ephemeral passwords predictable (with 1-in-94 odds). Since the attacker must manipulate data processed by the OpenSSL function RSA_public_decrypt(), successful exploitation of this vulnerability depends on the use of an unpadded RSA cipher (CVE-2022-25218).
CVE-2022-25218	The use of the RSA algorithm without OAEP, or any other padding scheme, in telnetd_startup, allows an unauthenticated attacker on the local area network to achieve a significant degree of control over the "plaintext" to which an arbitrary blob of ciphertext will be decrypted by OpenSSL's RSA_public_decrypt() function. This weakness allows the attacker to manipulate the various iterations of the telnetd startup state machine and eventually obtain a root shell on the device, by means of an exchange of crafted UDP packets. In all versions but K2 22.5.9.163 and K3C 32.1.15.93 a successful attack also requires the exploitation of a null-byte interaction error (CVE-2022-25219).
CVE-2022-25217	Use of a hard-coded cryptographic key pair by the telnetd_startup service allows an attacker on the local area network to obtain a root shell on the device over telnet. The builds of telnetd_startup included in the version 22.5.9.163 of the K2 firmware, and version 32.1.15.93 of the K3C firmware (possibly amongst many other releases) included both the private and public RSA keys. The remaining versions cited here redacted the private key, but left the public key unchanged. An attacker in possession of the leaked private key may, through a scripted exchange of UDP packets, instruct telnetd_startup to spawn an unauthenticated telnet shell as root, by means of which they can then obtain complete control of the device. A consequence of the limited availablility of firmware images for testing is that models and versions not listed here may share this vulnerability.
CVE-2022-24026	A buffer overflow vulnerability exists in the GetValue functionality of TCL LinkHub Mesh Wi-Fi MS1G_00_01.00_14. A specially-crafted configuration value can lead to a buffer overflow. An attacker can modify a configuration value to trigger this vulnerability.This vulnerability represents all occurances of the buffer overflow vulnerability within the telnet_ate_monitor binary.
CVE-2022-23768	This Vulnerability in NIS-HAP11AC is caused by an exposed external port for the telnet service. Remote attackers use this vulnerability to induce all attacks such as source code hijacking, remote control of the device.
CVE-2022-22164	An Improper Initialization vulnerability in Juniper Networks Junos OS Evolved may cause a commit operation for disabling the telnet service to not take effect as expected, resulting in the telnet service staying enabled. When it is not intended to be operating on the device, an administrator can issue the following command to verify whether telnet is operating in the background: user@device > show system connections \| grep :23 tcp 0 0 0.0.0.0:23 0.0.0.0:* LISTEN 20879/xinetd This issue affects: Juniper Networks Junos OS Evolved All versions prior to 20.4R2-S2-EVO; 21.1 version 21.1R1-EVO and later versions; 21.2 versions prior to 21.2R2-EVO.
CVE-2022-1039	The weak password on the web user interface can be exploited via HTTP or HTTPS. Once such access has been obtained, the other passwords can be changed. The weak password on Linux accounts can be accessed via SSH or Telnet, the former of which is by default enabled on trusted interfaces. While the SSH service does not support root login, a user logging in using either of the other Linux accounts may elevate to root access using the su command if they have access to the associated password.
CVE-2022-0982	The telnet_input_char function in opt/src/accel-pppd/cli/telnet.c suffers from a memory corruption vulnerability, whereby user input cmdline_len is copied into a fixed buffer b->buf without any bound checks. If the server connects with a malicious client, crafted client requests can remotely trigger this vulnerability.
CVE-2021-46008	In totolink a3100r V5.9c.4577, the hard-coded telnet password can be discovered from official released firmware. An attacker, who has connected to the Wi-Fi, can easily telnet into the target with root shell if the telnet is function turned on.
CVE-2021-45856	Accu-Time Systems MAXIMUS 1.0 telnet service suffers from a remote buffer overflow which causes the telnet service to crash
CVE-2021-45039	Multiple models of the Uniview IP Camera (e.g., IPC_G6103 B6103.16.10.B25.201218, IPC_G61, IPC21, IPC23, IPC32, IPC36, IPC62, and IPC_HCMN) offer an undocumented UDP service on port 7788 that allows a remote unauthenticated attacker to overflow an internal buffer and achieve code execution. By using this buffer overflow, a remote attacker can start the telnetd service. This service has a hardcoded default username and password (root/123456). Although it has a restrictive shell, this can be easily bypassed via the built-in ECHO shell command.
CVE-2021-43517	FOSCAM Camera FI9805E with firmware V4.02.R12.00018510.10012.143900.00000 contains a backdoor that opens Telnet port when special command is sent on port 9530.
CVE-2021-42892	In TOTOLINK EX1200T V4.1.2cu.5215, an attacker can start telnet without authorization because the default username and password exists in the firmware.
CVE-2021-40523	In Contiki 3.0, Telnet option negotiation is mishandled. During negotiation between a server and a client, the server may fail to give the WILL/WONT or DO/DONT response for DO and WILL commands because of improper handling of exception condition, which leads to property violations and denial of service. Specifically, a server sometimes sends no response, because a fixed buffer space is available for all responses and that space may have been exhausted.
CVE-2021-40113	Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON) Series Switches Optical Network Terminal (ONT) could allow an unauthenticated, remote attacker to perform the following actions: Log in with a default credential if the Telnet protocol is enabled Perform command injection Modify the configuration For more information about these vulnerabilities, see the Details section of this advisory.
CVE-2021-40112	Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON) Series Switches Optical Network Terminal (ONT) could allow an unauthenticated, remote attacker to perform the following actions: Log in with a default credential if the Telnet protocol is enabled Perform command injection Modify the configuration For more information about these vulnerabilities, see the Details section of this advisory.
CVE-2021-39615	UNSUPPORTED WHEN ASSIGNED D-Link DSR-500N version 1.02 contains hard-coded credentials for undocumented user accounts in the '/etc/passwd' file.If an attacker succeeds in recovering the cleartext password of the identified hash value, he will be able to log in via SSH or Telnet and thus gain access to the underlying embedded Linux operating system on the device. Fixed in version 2.12/2. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
CVE-2021-38387	In Contiki 3.0, a Telnet server that silently quits (before disconnection with clients) leads to connected clients entering an infinite loop and waiting forever, which may cause excessive CPU consumption.
CVE-2021-38386	In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial of service because the ls command is mishandled when a directory has many files with long names.
CVE-2021-38311	In Contiki 3.0, potential nonterminating acknowledgment loops exist in the Telnet service. When the negotiated options are already disabled, servers still respond to DONT and WONT requests with WONT or DONT commands, which may lead to infinite acknowledgment loops, denial of service, and excessive CPU consumption.
CVE-2021-37555	TX9 Automatic Food Dispenser v3.2.57 devices allow access to a shell as root/superuser, a related issue to CVE-2019-16734. To connect, the telnet service is used on port 23 with the default password of 059AnkJ for the root account. The user can then download the filesystem through preinstalled BusyBox utilities (e.g., tar and nc).
CVE-2021-3723	A command injection vulnerability was reported in the Integrated Management Module (IMM) of legacy IBM System x 3550 M3 and IBM System x 3650 M3 servers that could allow the execution of operating system commands over an authenticated SSH or Telnet session.
CVE-2021-37145	UNSUPPORTED WHEN ASSIGNED A command-injection vulnerability in an authenticated Telnet connection in Poly (formerly Polycom) CX5500 and CX5100 1.3.5 leads an attacker to Privilege Escalation and Remote Code Execution capability. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
CVE-2021-35973	NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd, allowing an unauthenticated attacker to invoke any action by adding the &currentsetting.htm substring to the HTTP query, a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password, and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however, escalation to root is simple because of weak permissions on the /etc/ directory).
CVE-2021-35327	A vulnerability in TOTOLINK A720R A720R_Firmware v4.1.5cu.470_B20200911 allows attackers to start the Telnet service, then login with the default credentials via a crafted POST request.
CVE-2021-3512	Improper access control vulnerability in Buffalo broadband routers (BHR-4GRV firmware Ver.1.99 and prior, DWR-HP-G300NH firmware Ver.1.83 and prior, HW-450HP-ZWE firmware Ver.1.99 and prior, WHR-300HP firmware Ver.1.99 and prior, WHR-300 firmware Ver.1.99 and prior, WHR-G301N firmware Ver.1.86 and prior, WHR-HP-G300N firmware Ver.1.99 and prior, WHR-HP-GN firmware Ver.1.86 and prior, WPL-05G300 firmware Ver.1.87 and prior, WZR-450HP-CWT firmware Ver.1.99 and prior, WZR-450HP-UB firmware Ver.1.99 and prior, WZR-HP-AG300H firmware Ver.1.75 and prior, WZR-HP-G300NH firmware Ver.1.83 and prior, WZR-HP-G301NH firmware Ver.1.83 and prior, WZR-HP-G302H firmware Ver.1.85 and prior, WZR-HP-G450H firmware Ver.1.89 and prior, WZR-300HP firmware Ver.1.99 and prior, WZR-450HP firmware Ver.1.99 and prior, WZR-600DHP firmware Ver.1.99 and prior, WZR-D1100H firmware Ver.1.99 and prior, FS-HP-G300N firmware Ver.3.32 and prior, FS-600DHP firmware Ver.3.38 and prior, FS-R600DHP firmware Ver.3.39 and prior, and FS-G300N firmware Ver.3.13 and prior) allows remote unauthenticated attackers to bypass access restriction and to start telnet service and execute arbitrary OS commands with root privileges via unspecified vectors.
CVE-2021-34795	Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON) Series Switches Optical Network Terminal (ONT) could allow an unauthenticated, remote attacker to perform the following actions: Log in with a default credential if the Telnet protocol is enabled Perform command injection Modify the configuration For more information about these vulnerabilities, see the Details section of this advisory.
CVE-2021-34565	In PEPPERL+FUCHS WirelessHART-Gateway 3.0.7 to 3.0.9 the SSH and telnet services are active with hard-coded credentials.
CVE-2021-34203	D-Link DIR-2640-US 1.01B04 is vulnerable to Incorrect Access Control. Router ac2600 (dir-2640-us), when setting PPPoE, will start quagga process in the way of whole network monitoring, and this function uses the original default password and port. An attacker can easily use telnet to log in, modify routing information, monitor the traffic of all devices under the router, hijack DNS and phishing attacks. In addition, this interface is likely to be questioned by customers as a backdoor, because the interface should not be exposed.
CVE-2021-32824	Apache Dubbo is a java based, open source RPC framework. Versions prior to 2.6.10 and 2.7.10 are vulnerable to pre-auth remote code execution via arbitrary bean manipulation in the Telnet handler. The Dubbo main service port can be used to access a Telnet Handler which offers some basic methods to collect information about the providers and methods exposed by the service and it can even allow to shutdown the service. This endpoint is unprotected. Additionally, a provider method can be invoked using the `invoke` handler. This handler uses a safe version of FastJson to process the call arguments. However, the resulting list is later processed with `PojoUtils.realize` which can be used to instantiate arbitrary classes and invoke its setters. Even though FastJson is properly protected with a default blocklist, `PojoUtils.realize` is not, and an attacker can leverage that to achieve remote code execution. Versions 2.6.10 and 2.7.10 contain fixes for this issue.
CVE-2021-31337	The Telnet service of the SIMATIC HMI Comfort Panels system component in affected products does not require authentication, which may allow a remote attacker to gain access to the device if the service is enabled. Telnet is disabled by default on the SINAMICS Medium Voltage Products (SINAMICS SL150: All versions, SINAMICS SM150: All versions, SINAMICS SM150i: All versions).
CVE-2021-31251	An authentication bypass in telnet server in BF-430 and BF431 232/422 TCP/IP Converter, BF-450M and SEMAC from CHIYU Technology Inc allows obtaining a privileged connection with the target device by supplying a specially malformed request and an attacker may force the remote telnet server to believe that the user has already authenticated.
CVE-2021-30028	SOOTEWAY Wi-Fi Range Extender v1.5 was discovered to use default credentials (the admin password for the admin account) to access the TELNET service, allowing attackers to erase/read/write the firmware remotely.
CVE-2021-28152	Hongdian H8922 3.0.5 devices have an undocumented feature that allows access to a shell as a superuser. To connect, the telnet service is used on port 5188 with the default credentials of root:superzxmn.
CVE-2021-27794	A vulnerability in the authentication mechanism of Brocade Fabric OS versions before Brocade Fabric OS v.9.0.1a, v8.2.3a and v7.4.2h could allow a user to Login with empty password, and invalid password through telnet, ssh and REST.
CVE-2021-27342	An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack
CVE-2021-27179	An issue was discovered on FiberHome HG6245D devices through RP2613. It is possible to crash the telnet daemon by sending a certain 0a 65 6e 61 62 6c 65 0a 02 0a 1a 0a string.
CVE-2021-27177	An issue was discovered on FiberHome HG6245D devices through RP2613. It is possible to bypass authentication by sending the decoded value of the GgpoZWxwCmxpc3QKd2hvCg== string to the telnet server.
CVE-2021-27173	An issue was discovered on FiberHome HG6245D devices through RP2613. There is a telnet?enable=0&key=calculated(BR0_MAC) backdoor API, without authentication, provided by the HTTP server. This will remove firewall rules and allow an attacker to reach the telnet server (used for the CLI).
CVE-2021-27171	An issue was discovered on FiberHome HG6245D devices through RP2613. It is possible to start a Linux telnetd as root on port 26/tcp by using the CLI interface commands of ddd and shell (or tshell).
CVE-2021-27165	An issue was discovered on FiberHome HG6245D devices through RP2613. The telnet daemon on port 23/tcp can be abused with the gpon/gpon credentials.
CVE-2021-26797	An access control vulnerability in Hame SD1 Wi-Fi firmware <=V.20140224154640 allows an attacker to get system administrator through an open Telnet service.
CVE-2021-25309	The telnet administrator service running on port 650 on Gigaset DX600A v41.00-175 devices does not implement any lockout or throttling functionality. This situation (together with the weak password policy that forces a 4-digit password) allows remote attackers to easily obtain administrative access via brute-force attacks.
CVE-2021-23850	A specially crafted TCP/IP packet may cause a camera recovery image telnet interface to crash. It may also cause a buffer overflow which could enable remote code execution. The recovery image can only be booted with administrative rights or with physical access to the camera and allows the upload of a new firmware in case of a damaged firmware.
CVE-2021-22898	curl 7.7 through 7.76.1 suffers from an information disclosure when the `-t` command line option, known as `CURLOPT_TELNETOPTIONS` in libcurl, is used to send variable=content pairs to TELNET servers. Due to a flaw in the option parser for sending NEW_ENV variables, libcurl could be made to pass on uninitialized data from a stack based buffer to the server, resulting in potentially revealing sensitive internal information to the server using a clear-text network protocol.
CVE-2021-22702	A CWE-319: Cleartext transmission of sensitive information vulnerability exists in PowerLogic ION7400, ION7650, ION7700/73xx, ION83xx/84xx/85xx/8600, ION8650, ION8800, ION9000 and PM800 (see notification for affected versions), that could cause disclosure of user credentials when a malicious actor intercepts Telnet network traffic between a user and the device.
CVE-2021-21799	Cross-site scripting vulnerabilities exist in the telnet_form.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). If a user visits a specially crafted URL, it can lead to arbitrary JavaScript code execution in the context of the targeted user’s browser. An attacker can provide a crafted URL to trigger this vulnerability.
CVE-2021-21485	An unauthorized attacker may be able to entice an administrator to invoke telnet commands of an SAP NetWeaver Application Server for Java that allow the attacker to gain NTLM hashes of a privileged user.
CVE-2021-20864	Improper access control vulnerability in ELECOM routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a network-adjacent unauthenticated attacker to bypass access restriction, and to start the telnet service and execute an arbitrary OS command via unspecified vectors.
CVE-2021-20776	Improper authentication vulnerability in SCT-40CM01SR and AT-40CM01SR allows an attacker to bypass access restriction and execute an arbitrary command via telnet.
CVE-2021-20694	Improper access control vulnerability in DAP-1880AC firmware version 1.21 and earlier allows a remote authenticated attacker to bypass access restriction and to start a telnet service via unspecified vectors.
CVE-2021-20650	Cross-site request forgery (CSRF) vulnerability in ELECOM NCC-EWF100RMWH2 allows remote attackers to hijack the authentication of administrators and execute an arbitrary request via unspecified vector. As a result, the device settings may be altered and/or telnet daemon may be started.
CVE-2021-20647	Cross-site request forgery (CSRF) vulnerability in ELECOM WRC-300FEBK-S allows remote attackers to hijack the authentication of administrators and execute an arbitrary request via unspecified vector. As a result, the device settings may be altered and/or telnet daemon may be started.
CVE-2021-20646	Cross-site request forgery (CSRF) vulnerability in ELECOM WRC-300FEBK-A allows remote attackers to hijack the authentication of administrators and execute an arbitrary request via unspecified vector. As a result, the device settings may be altered and/or telnet daemon may be started.
CVE-2020-8797	Juplink RX4-1500 v1.0.3 allows remote attackers to gain root access to the Linux subsystem via an unsanitized exec call (aka Command Line Injection), if the undocumented telnetd service is enabled and the attacker can authenticate as admin from the local network.
CVE-2020-6873	A ZTE product has a DoS vulnerability. Because the equipment couldn’t distinguish the attack packets and normal packets with valid http links, the remote attackers could use this vulnerability to cause the equipment WEB/TELNET module denial of service and make the equipment be out of management. This affects: ZXR10 2800-4_ALMPUFB(LOW), all versions up to V3.00.40.
CVE-2020-6852	CACAGOO Cloud Storage Intelligent Camera TV-288ZD-2MP with firmware 3.4.2.0919 has weak authentication of TELNET access, leading to root privileges without any password required.
CVE-2020-6765	D-Link DSL-GS225 J1 AU_1.0.4 devices allow an admin to execute OS commands by placing shell metacharacters after a supported CLI command, as demonstrated by ping -c1 127.0.0.1; cat/etc/passwd. The CLI is reachable by TELNET.
CVE-2020-3404	A vulnerability in the persistent Telnet/Secure Shell (SSH) CLI of Cisco IOS XE Software could allow an authenticated, local attacker to gain shell access on an affected device and execute commands on the underlying operating system (OS) with root privileges. The vulnerability is due to insufficient enforcement of the consent token in authorizing shell access. An attacker could exploit this vulnerability by authenticating to the persistent Telnet/SSH CLI on an affected device and requesting shell access. A successful exploit could allow the attacker to gain shell access on the affected device and execute commands on the underlying OS with root privileges.
CVE-2020-3330	A vulnerability in the Telnet service of Cisco Small Business RV110W Wireless-N VPN Firewall Routers could allow an unauthenticated, remote attacker to take full control of the device with a high-privileged account. The vulnerability exists because a system account has a default and static password. An attacker could exploit this vulnerability by using this default account to connect to the affected system. A successful exploit could allow the attacker to gain full control of an affected device.
CVE-2020-29380	An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49, V1600D-MINI V1.01.48, V1600G1 V2.0.7 and V1.9.7, and V1600G2 V1.1.4 OLT devices. TELNET is offered by default but SSH is not always available. An attacker can intercept passwords sent in cleartext and conduct a man-in-the-middle attack on the management of the appliance.
CVE-2020-29379	An issue was discovered on V-SOL V1600D4L V1.01.49 and V1600D-MINI V1.01.48 OLT devices. During the process of updating the firmware, the update script starts a telnetd -l /bin/sh process that does not require authentication for TELNET access.
CVE-2020-29376	An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49, V1600D-MINI V1.01.48, V1600G1 V2.0.7 and V1.9.7, and V1600G2 V1.1.4 OLT devices. There is an !j@l#y$z%x6x7q8c9z) password for the admin account to authenticate to the TELNET service.
CVE-2020-29324	The DLink Router DIR-895L MFC v1.21b05 is vulnerable to credentials disclosure in telnet service through decompilation of firmware, that allows an unauthenticated attacker to gain access to the firmware and to extract sensitive data.
CVE-2020-29323	The D-link router DIR-885L-MFC 1.15b02, v1.21b05 is vulnerable to credentials disclosure in telnet service through decompilation of firmware, that allows an unauthenticated attacker to gain access to the firmware and to extract sensitive data.
CVE-2020-29322	The D-Link router DIR-880L 1.07 is vulnerable to credentials disclosure in telnet service through decompilation of firmware, that allows an unauthenticated attacker to gain access to the firmware and to extract sensitive data.
CVE-2020-29321	The D-Link router DIR-868L 3.01 is vulnerable to credentials disclosure in telnet service through decompilation of firmware, that allows an unauthenticated attacker to gain access to the firmware and to extract sensitive data.
CVE-2020-29057	An issue was discovered on CDATA 72408A, 9008A, 9016A, 92408A, 92416A, 9288, 97016, 97024P, 97028P, 97042P, 97084P, 97168P, FD1002S, FD1104, FD1104B, FD1104S, FD1104SN, FD1108S, FD1204S-R2, FD1204SN, FD1204SN-R2, FD1208S-R2, FD1216S-R1, FD1608GS, FD1608SN, FD1616GS, FD1616SN, and FD8000 devices. It allows remote attackers to cause a denial of service (reboot) by sending random bytes to the telnet server on port 23, aka a "shawarma" attack.
CVE-2020-29055	An issue was discovered on CDATA 72408A, 9008A, 9016A, 92408A, 92416A, 9288, 97016, 97024P, 97028P, 97042P, 97084P, 97168P, FD1002S, FD1104, FD1104B, FD1104S, FD1104SN, FD1108S, FD1204S-R2, FD1204SN, FD1204SN-R2, FD1208S-R2, FD1216S-R1, FD1608GS, FD1608SN, FD1616GS, FD1616SN, and FD8000 devices. By default, the appliance can be managed remotely only with HTTP, telnet, and SNMP. It doesn't support SSL/TLS for HTTP or SSH. An attacker can intercept passwords sent in cleartext and conduct man-in-the-middle attacks on the management of the appliance.
CVE-2020-29054	An issue was discovered on CDATA 72408A, 9008A, 9016A, 92408A, 92416A, 9288, 97016, 97024P, 97028P, 97042P, 97084P, 97168P, FD1002S, FD1104, FD1104B, FD1104S, FD1104SN, FD1108S, FD1204S-R2, FD1204SN, FD1204SN-R2, FD1208S-R2, FD1216S-R1, FD1608GS, FD1608SN, FD1616GS, FD1616SN, and FD8000 devices. Attackers can use "show system infor" to discover cleartext TELNET credentials.
CVE-2020-29000	An issue was discovered on Geeni GNC-CW013 doorbell 1.8.1 devices. A vulnerability exists in the RTSP service that allows a remote attacker to take full control of the device with a high-privileged account. By sending a crafted message, an attacker is able to remotely deliver a telnet session. Any attacker that has the ability to control DNS can exploit this vulnerability to remotely login to the device and gain access to the camera system.
CVE-2020-28998	An issue was discovered on Geeni GNC-CW013 doorbell 1.8.1 devices. A vulnerability exists in the Telnet service that allows a remote attacker to take full control of the device with a high-privileged account. The vulnerability exists because a system account has a default and static password.
CVE-2020-27555	Use of default credentials for the telnet server in BASETech GE-131 BT-1837836 firmware 20180921 allows remote attackers to execute arbitrary system commands as the root user.
CVE-2020-27184	The NPort IA5000A Series devices use Telnet as one of the network device management services. Telnet does not support the encryption of client-server communications, making it vulnerable to Man-in-the-Middle attacks.
CVE-2020-26201	Askey AP5100W_Dual_SIG_1.01.097 and all prior versions use a weak password at the Operating System (rlx-linux) level. This allows an attacker to gain unauthorized access as an admin or root user to the device Operating System via Telnet or SSH.
CVE-2020-26097	UNSUPPORTED WHEN ASSIGNED The firmware of the PLANET Technology Corp NVR-915 and NVR-1615 before 2020-10-28 embeds default credentials for root access via telnet. By exposing telnet on the Internet, remote root access on the device is possible. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
CVE-2020-25749	The Telnet service of Rubetek cameras RV-3406, RV-3409, and RV-3411 cameras (firmware versions v342, v339) could allow an remote attacker to take full control of the device with a high-privileged account. The vulnerability exists because a system account has a default and static password. The Telnet service cannot be disabled and this password cannot be changed via standard functionality.
CVE-2020-25747	The Telnet service of Rubetek RV-3406, RV-3409, and RV-3411 cameras (firmware versions v342, v339) can allow a remote attacker to gain access to RTSP and ONFIV services without authentication. Thus, the attacker can watch live streams from the camera, rotate the camera, change some settings (brightness, clarity, time), restart the camera, or reset it to factory settings.
CVE-2020-25196	The built-in WEB server for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower allows SSH/Telnet sessions, which may be vulnerable to brute force attacks to bypass authentication.
CVE-2020-24056	A hardcoded credentials vulnerability exists in Verint 5620PTZ Verint_FW_0_42, Verint 4320 V4320_FW_0_23, V4320_FW_0_31, and Verint S5120FD Verint_FW_0_42units. This could cause a confidentiality issue when using the FTP, Telnet, or SSH protocols.
CVE-2020-24053	Moog EXO Series EXVF5C-2 and EXVP7C2-3 units have a hardcoded credentials vulnerability. This could cause a confidentiality issue when using the FTP, Telnet, or SSH protocols.
CVE-2020-22253	Xiongmai Technology Co devices AHB7008T-MH-V2, AHB7804R-ELS, AHB7804R-MH-V2, AHB7808R-MS-V2, AHB7808R-MS, AHB7808T-MS-V2, AHB7804R-LMS, and HI3518E_50H10L_S39 were all discovered to have port 9530 open which allows unauthenticated attackers to make arbitrary Telnet connections with the victim device.
CVE-2020-21995	Inim Electronics Smartliving SmartLAN/G/SI <=6.x uses default hardcoded credentials. An attacker could exploit this to gain Telnet, SSH and FTP access to the system.
CVE-2020-15798	A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V16 Update 3a), SIMATIC HMI KTP Mobile Panels (All versions < V16 Update 3a), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). Affected devices with enabled telnet service do not require authentication for this service. This could allow a remote attacker to gain full access to the device. (ZDI-CAN-12046)
CVE-2020-15482	An issue was discovered on Nescomed Multipara Monitor M1000 devices. The device enables an unencrypted TELNET service by default, with a blank password for the admin account. This allows an attacker to gain root access to the device over the local network.
CVE-2020-14510	GateManager versions prior to 9.2c, The affected product contains a hard-coded credential for telnet, allowing an unprivileged attacker to execute commands as root.
CVE-2020-13528	An information disclosure vulnerability exists in the Web Manager and telnet CLI functionality of Lantronix XPort EDGE 3.0.0.0R11, 3.1.0.0R9, 3.4.0.0R12 and 4.2.0.0R7. A specially crafted HTTP request can cause information disclosure. An attacker can sniff the network to trigger this vulnerability.
CVE-2020-13365	Certain Zyxel products have a locally accessible binary that allows a non-root user to generate a password for an undocumented user account that can be used for a TELNET session as root. This affects NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, and V5.11(AASZ.0)C0; NAS542 V5.11(ABAG.0)C0, V5.20(ABAG.1)C0, and V5.21(ABAG.3)C0; NSA325 v2_V4.81(AALS.0)C0 and V4.81(AAAJ.1)C0; NSA310 4.22(AFK.0)C0 and 4.22(AFK.1)C0; NAS326 V5.21(AAZF.8)C0, V5.11(AAZF.4)C0, V5.11(AAZF.2)C0, and V5.11(AAZF.3)C0; NSA310S V4.75(AALH.2)C0; NSA320S V4.75(AANV.2)C0 and V4.75(AANV.1)C0; NSA221 V4.41(AFM.1)C0; and NAS540 V5.21(AATB.5)C0 and V5.21(AATB.3)C0.
CVE-2020-13364	A backdoor in certain Zyxel products allows remote TELNET access via a CGI script. This affects NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, and V5.11(AASZ.0)C0; NAS542 V5.11(ABAG.0)C0, V5.20(ABAG.1)C0, and V5.21(ABAG.3)C0; NSA325 v2_V4.81(AALS.0)C0 and V4.81(AAAJ.1)C0; NSA310 4.22(AFK.0)C0 and 4.22(AFK.1)C0; NAS326 V5.21(AAZF.8)C0, V5.11(AAZF.4)C0, V5.11(AAZF.2)C0, and V5.11(AAZF.3)C0; NSA310S V4.75(AALH.2)C0; NSA320S V4.75(AANV.2)C0 and V4.75(AANV.1)C0; NSA221 V4.41(AFM.1)C0; and NAS540 V5.21(AATB.5)C0 and V5.21(AATB.3)C0.
CVE-2020-12733	Certain Shenzhen PENGLIXIN components on DEPSTECH WiFi Digital Microscope 3, as used by Shekar Endoscope, allow a TELNET connection with the molinkadmin password for the molink account.
CVE-2020-12045	The Baxter Spectrum WBM (v17, v20D29, v20D30, v20D31, and v22D24) when used in conjunction with a Baxter Spectrum v8.x (model 35700BAX2), operates a Telnet service on Port 1023 with hard-coded credentials.
CVE-2020-12041	The Baxter Spectrum WBM (v17, v20D29, v20D30, v20D31, and v22D24) telnet Command-Line Interface, grants access to sensitive data stored on the WBM that permits temporary configuration changes to network settings of the WBM, and allows the WBM to be rebooted. Temporary configuration changes to network settings are removed upon reboot.
CVE-2020-11915	An issue was discovered in Svakom Siime Eye 14.1.00000001.3.330.0.0.3.14. By sending a set_params.cgi?telnetd=1&save=1&reboot=1 request to the webserver, it is possible to enable the telnet interface on the device. The telnet interface can then be used to obtain access to the device with root privileges via a reecam4debug default password. This default telnet password is the same across all Siime Eye devices. In order for the attack to be exploited, an attacker must be physically close in order to connect to the device's Wi-Fi access point.
CVE-2020-11618	THOMSON THT741FTA 2.2.1 and Philips DTR3502BFTA DVB-T2 2.2.1 set-top boxes have their TELNET service hardcoded to start on boot, which allows an attacker on the local network to achieve root access via the TELNET protocol.
CVE-2020-10988	A hard-coded telnet credential in the tenda_login binary of Tenda AC15 AC1900 version 15.03.05.19 allows unauthenticated remote attackers to start a telnetd service on the device.
CVE-2020-10263	An issue was discovered on XIAOMI XIAOAI speaker Pro LX06 1.52.4. Attackers can get root shell by accessing the UART interface and then they can (i) read Wi-Fi SSID or password, (ii) read the dialogue text files between users and XIAOMI XIAOAI speaker Pro LX06, (iii) use Text-To-Speech tools pretend XIAOMI speakers' voice achieve social engineering attacks, (iv) eavesdrop on users and record what XIAOMI XIAOAI speaker Pro LX06 hears, (v) modify system files, (vi) use commands to send any IR code through IR emitter on XIAOMI XIAOAI Speaker Pro LX06, (vii) stop voice assistant service, (viii) enable the XIAOMI XIAOAI Speaker Pro’ SSH or TELNET service as a backdoor, (IX) tamper with the router configuration of the router in the local area networks.
CVE-2020-10262	An issue was discovered on XIAOMI XIAOAI speaker Pro LX06 1.58.10. Attackers can activate the failsafe mode during the boot process, and use the mi_console command cascaded by the SN code shown on the product to get the root shell password, and then the attacker can (i) read Wi-Fi SSID or password, (ii) read the dialogue text files between users and XIAOMI XIAOAI speaker Pro LX06, (iii) use Text-To-Speech tools pretend XIAOMI speakers' voice achieve social engineering attacks, (iv) eavesdrop on users and record what XIAOMI XIAOAI speaker Pro LX06 hears, (v) modify system files, (vi) use commands to send any IR code through IR emitter on XIAOMI XIAOAI Speaker Pro (LX06), (vii) stop voice assistant service, (viii) enable the XIAOMI XIAOAI Speaker Pro’s SSH or TELNET service as a backdoor, (IX) tamper with the router configuration of the router in the local area networks.
CVE-2020-10188	utility.c in telnetd in netkit telnet through 0.17 allows remote attackers to execute arbitrary code via short writes or urgent data, because of a buffer overflow involving the netclear and nextitem functions.
CVE-2019-9531	The web application portal of the Cobham EXPLORER 710, firmware version 1.07, allows unauthenticated access to port 5454. This could allow an unauthenticated, remote attacker to connect to this port via Telnet and execute 86 Attention (AT) commands, including some that provide unauthenticated, shell-like access to the device.
CVE-2019-9228	DISPUTED An issue was discovered on AudioCodes Mediant 500L-MSBR, 500-MBSR, M800B-MSBR and 800C-MSBR devices with firmware versions F7.20A at least to 7.20A.252.062. The (1) management SSH and (2) management TELNET features allow remote attackers to cause a denial of service (connection slot exhaustion) via 5 unauthenticated connection attempts, because the maximum number of unauthenticated clients that can be configured is 5. NOTE: the vendor's position is that this is a "design choice."
CVE-2019-8950	The backdoor account dnsekakf2$$ in /bin/login on DASAN H665 devices with firmware 1.46p1-0028 allows an attacker to login to the admin account via TELNET.
CVE-2019-7715	An issue was discovered in the Interpeak IPCOMShell TELNET server on Green Hills INTEGRITY RTOS 5.0.4. The main shell handler function uses the value of the environment variable ipcom.shell.greeting as the first argument to printf(). Setting this variable using the sysvar command results in a user-controlled format string during login, resulting in an information leak of memory addresses.
CVE-2019-7713	An issue was discovered in the Interpeak IPCOMShell TELNET server on Green Hills INTEGRITY RTOS 5.0.4. There is a heap-based buffer overflow in the function responsible for printing the shell prompt, when a custom modifier is used to display information such as a process ID, IP address, or current working directory. Modifier expansion triggers this overflow, causing memory corruption or a crash (and also leaks memory address information).
CVE-2019-7712	An issue was discovered in handler_ipcom_shell_pwd in the Interpeak IPCOMShell TELNET server on Green Hills INTEGRITY RTOS 5.0.4. When using the pwd command, the current working directory path is used as the first argument to printf() without a proper check. An attacker may thus forge a path containing format string modifiers to get a custom format string evaluated. This results in an information leak of memory addresses.
CVE-2019-7711	An issue was discovered in the Interpeak IPCOMShell TELNET server on Green Hills INTEGRITY RTOS 5.0.4. The undocumented shell command "prompt" sets the (user controlled) shell's prompt value, which is used as a format string input to printf, resulting in an information leak of memory addresses.
CVE-2019-7298	An issue was discovered on D-Link DIR-823G devices with firmware through 1.02B03. A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted /HNAP1 request. This occurs when any HNAP API function triggers a call to the system function with untrusted input from the request body, such as a body of ' /bin/telnetd' for the GetDeviceSettingsset API function. Consequently, an attacker can execute any command remotely when they control this input.
CVE-2019-3918	The Alcatel Lucent I-240W-Q GPON ONT using firmware version 3FE54567BOZJ19 contains multiple hard coded credentials for the Telnet and SSH interfaces.
CVE-2019-3917	The Alcatel Lucent I-240W-Q GPON ONT using firmware version 3FE54567BOZJ19 allows a remote, unauthenticated attacker to enable telnetd on the router via a crafted HTTP request.
CVE-2019-3422	The Sec Consult Security Lab reported an information disclosure vulnerability in MF910S product to ZTE PSIRT in October 2019. Through the analysis of related product team, the information disclosure vulnerability is confirmed. The MF910S product's one-click upgrade tool can obtain the Telnet remote login password in the reverse way. If Telnet is opened, the attacker can remotely log in to the device through the cracked password, resulting in information leakage. The MF910S was end of service on October 23, 2019, ZTE recommends users to choose new products for the purpose of better security.
CVE-2019-20467	An issue was discovered on Sannce Smart HD Wifi Security Camera EAN 2 950004 595317 devices. The device by default has a TELNET interface available (which is not advertised or functionally used, but is nevertheless available). Two backdoor accounts (root and default) exist that can be used on this interface. The usernames and passwords of the backdoor accounts are the same on all devices. Attackers can use these backdoor accounts to obtain access and execute code as root within the device.
CVE-2019-20465	An issue was discovered on Sannce Smart HD Wifi Security Camera EAN 2 950004 595317 devices. It is possible (using TELNET without a password) to control the camera's pan/zoom/tilt functionality.
CVE-2019-19940	Incorrect input sanitation in text-oriented user interfaces (telnet, ssh) in Swisscom Centro Grande before 6.16.12 allows remote authenticated users to execute arbitrary commands via command injection.
CVE-2019-19495	The web interface on the Technicolor TC7230 STEB 01.25 is vulnerable to DNS rebinding, which allows a remote attacker to configure the cable modem via JavaScript in a victim's browser. The attacker can then configure the cable modem to port forward the modem's internal TELNET server, allowing external access to a root shell.
CVE-2019-19148	Tellabs Optical Line Terminal (OLT) 1150 devices allow Remote Command Execution via the -l option to TELNET or SSH. Tellabs has addressed this issue in the SR30.1 and SR31.1 release on February 18, 2020.
CVE-2019-18852	Certain D-Link devices have a hardcoded Alphanetworks user account with TELNET access because of /etc/config/image_sign or /etc/alpha_config/image_sign. This affects DIR-600 B1 V2.01 for WW, DIR-890L A1 v1.03, DIR-615 J1 v100 (for DCN), DIR-645 A1 v1.03, DIR-815 A1 v1.01, DIR-823 A1 v1.01, and DIR-842 C1 v3.00.
CVE-2019-18666	An issue was discovered on D-Link DAP-1360 revision F devices. Remote attackers can start a telnet service without authorization via an undocumented HTTP request. Although this is the primary vulnerability, the impact depends on the firmware version. Versions 609EU through 613EUbeta were tested. Versions through 6.12b01 have weak root credentials, allowing an attacker to gain remote root access. After 6.12b01, the root credentials were changed but the telnet service can still be started without authorization.
CVE-2019-18382	An issue was discovered on AVStar PE204 3.10.70 IP camera devices. A denial of service can occur on open TCP port 23456. After a TELNET connection, no TCP ports are open.
CVE-2019-17186	/var/WEB-GUI/cgi-bin/telnet.cgi on FiberHome HG2201T 1.00.M5007_JS_201804 devices allows pre-authentication remote code execution.
CVE-2019-16879	The Synergy Systems & Solutions (SSS) HUSKY RTU 6049-E70, with firmware Versions 5.0 and prior, has a Missing Authentication for Critical Function (CWE-306) vulnerability. The affected product does not require authentication for TELNET access, which may allow an attacker to change configuration or perform other malicious activities.
CVE-2019-16734	Use of default credentials for the TELNET server in Petwant PF-103 firmware 4.3.2.50 and Petalk AI 3.2.2.30 allows remote attackers to execute arbitrary system commands as the root user.
CVE-2019-1656	A vulnerability in the CLI of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, local attacker to access the shell of the underlying Linux operating system on the affected device. The vulnerability is due to improper input validation in the affected software. An attacker could exploit this vulnerability by sending crafted commands to the affected device. An exploit could allow the attacker to gain shell access with a nonroot user account to the underlying Linux operating system on the affected device and potentially access system configuration files with sensitive information. This vulnerability only affects console connections from CIMC. It does not apply to remote connections, such as telnet or SSH.
CVE-2019-15940	Victure PC530 devices allow unauthenticated TELNET access as root.
CVE-2019-14919	An exposed Telnet Service on the Billion Smart Energy Router SG600R2 with firmware v3.02.rc6 allows a local network attacker to authenticate via hardcoded credentials into a shell, gaining root execution privileges over the device.
CVE-2019-14326	An issue was discovered in AndyOS Andy versions up to 46.11.113. By default, it starts telnet and ssh (ports 22 and 23) with root privileges in the emulated Android system. This can be exploited by remote attackers to gain full access to the device, or by malicious apps installed inside the emulator to perform privilege escalation from a normal user to root (unlike with standard methods of getting root privileges on Android - e.g., the SuperSu program - the user is not asked for consent). There is no authentication performed - access to a root shell is given upon a successful connection. NOTE: although this was originally published with a slightly different CVE ID number, the correct ID for this Andy vulnerability has always been CVE-2019-14326.
CVE-2019-13554	GE Mark VIe Controller has an unsecured Telnet protocol that may allow a user to create an authenticated session using generic default credentials. GE recommends that users disable the Telnet service.
CVE-2019-13473	TELESTAR Bobs Rock Radio, Dabman D10, Dabman i30 Stereo, Imperial i110, Imperial i150, Imperial i200, Imperial i200-cd, Imperial i400, Imperial i450, Imperial i500-bt, and Imperial i600 TN81HH96-g102h-g102 devices have an undocumented TELNET service within the BusyBox subsystem, leading to root access.
CVE-2019-12920	On Shenzhen Cylan Clever Dog Smart Camera DOG-2W and DOG-2W-V4 devices, an attacker on the network can login remotely to the camera and gain root access. The device ships with a hardcoded 12345678 password for the root account, accessible from a TELNET login prompt.
CVE-2019-12550	WAGO 852-303 before FW06, 852-1305 before FW06, and 852-1505 before FW03 devices contain hardcoded users and passwords that can be used to login via SSH and TELNET.
CVE-2019-12327	Hardcoded credentials in the Akuvox R50P VoIP phone 50.0.6.156 allow an attacker to get access to the device via telnet. The telnet service is running on port 2323; it cannot be turned off and the credentials cannot be changed.
CVE-2019-11320	In Motorola CX2 1.01 and M2 1.01, users can access the router's /priv_mgt.html web page to launch telnetd, as demonstrated by the 192.168.51.1 address.
CVE-2019-10950	Fujifilm FCR Capsula X/ Carbon X/ FCR XC-2, model versions CR-IR 357 FCR Carbon X, CR-IR 357 FCR XC-2, FCR-IR 357 FCR Capsula X provide insecure telnet services that lack authentication requirements. An attacker who successfully exploits this vulnerability may be able to access the underlying operating system.
CVE-2019-10942	A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X204RNA (HSR) (All versions), SCALANCE X204RNA (PRP) (All versions), SCALANCE X204RNA EEC (HSR) (All versions), SCALANCE X204RNA EEC (PRP) (All versions), SCALANCE X204RNA EEC (PRP/HSR) (All versions). The device contains a vulnerability that could allow an attacker to trigger a denial-of-service condition by sending large message packages repeatedly to the telnet service. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the device.
CVE-2019-0069	On EX4600, QFX5100 Series, NFX Series, QFX10K Series, QFX5110, QFX5200 Series, QFX5110, QFX5200, QFX10K Series, vSRX, SRX1500, SRX4000 Series, vSRX, SRX1500, SRX4000, QFX5110, QFX5200, QFX10K Series, when the user uses console management port to authenticate, the credentials used during device authentication are written to a log file in clear text. This issue does not affect users that are logging-in using telnet, SSH or J-web to the management IP. This issue affects ACX, NFX, SRX, EX and QFX platforms with the Linux Host OS architecture, it does not affect other SRX and EX platforms that do not use the Linux Host OS architecture. This issue affects Juniper Networks Junos OS: 15.1X49 versions prior to 15.1X49-D110 on vSRX, SRX1500, SRX4000 Series; 15.1X53 versions prior to 15.1X53-D234 on QFX5110, QFX5200 Series; 15.1X53 versions prior to 15.1X53-D68 on QFX10K Series; 17.1 versions prior to 17.1R2-S8, 17.1R3, on QFX5110, QFX5200, QFX10K Series; 17.2 versions prior to 17.2R1-S7, 17.2R2-S6, 17.2R3 on QFX5110, QFX5200, QFX10K Series; 17.3 versions prior to 17.3R2 on vSRX, SRX1500, SRX4000, QFX5110, QFX5200, QFX10K Series; 14.1X53 versions prior to 14.1X53-D47 on ACX5000, EX4600, QFX5100 Series; 15.1 versions prior to 15.1R7 on ACX5000, EX4600, QFX5100 Series; 16.1R7 versions prior to 16.1R7 on ACX5000, EX4600, QFX5100 Series; 17.1 versions prior to 17.1R2-S10, 17.1R3 on ACX5000, EX4600, QFX5100 Series; 17.2 versions prior to 17.2R3 on ACX5000, EX4600, QFX5100 Series; 17.3 versions prior to 17.3R3 on ACX5000, EX4600, QFX5100 Series; 17.4 versions prior to 17.4R2 on ACX5000, EX4600, QFX5100 Series; 18.1 versions prior to 18.1R2 on ACX5000, EX4600, QFX5100 Series; 15.1X53 versions prior to 15.1X53-D496 on NFX Series, 17.2 versions prior to 17.2R3-S1 on NFX Series; 17.3 versions prior to 17.3R3-S4 on NFX Series; 17.4 versions prior to 17.4R2-S4, 17.4R3 on NFX Series, 18.1 versions prior to 18.1R3-S4 on NFX Series; 18.2 versions prior to 18.2R2-S3, 18.2R3 on NFX Series; 18.3 versions prior to 18.3R1-S3, 18.3R2 on NFX Series; 18.4 versions prior to 18.4R1-S1, 18.4R2 on NFX Series.
CVE-2019-0053	Insufficient validation of environment variables in the telnet client supplied in Junos OS can lead to stack-based buffer overflows, which can be exploited to bypass veriexec restrictions on Junos OS. A stack-based overflow is present in the handling of environment variables when connecting via the telnet client to remote telnet servers. This issue only affects the telnet client — accessible from the CLI or shell — in Junos OS. Inbound telnet services are not affected by this issue. This issue affects: Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S13; 12.3X48 versions prior to 12.3X48-D80; 14.1X53 versions prior to 14.1X53-D130, 14.1X53-D49; 15.1 versions prior to 15.1F6-S12, 15.1R7-S4; 15.1X49 versions prior to 15.1X49-D170; 15.1X53 versions prior to 15.1X53-D237, 15.1X53-D496, 15.1X53-D591, 15.1X53-D69; 16.1 versions prior to 16.1R3-S11, 16.1R7-S4; 16.2 versions prior to 16.2R2-S9; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R1-S8, 17.2R2-S7, 17.2R3-S1; 17.3 versions prior to 17.3R3-S4; 17.4 versions prior to 17.4R1-S6, 17.4R2-S3, 17.4R3; 18.1 versions prior to 18.1R2-S4, 18.1R3-S3; 18.2 versions prior to 18.2R1-S5, 18.2R2-S2, 18.2R3; 18.2X75 versions prior to 18.2X75-D40; 18.3 versions prior to 18.3R1-S3, 18.3R2; 18.4 versions prior to 18.4R1-S2, 18.4R2.
CVE-2018-9149	The Zyxel Multy X (AC3000 Tri-Band WiFi System) device doesn't use a suitable mechanism to protect the UART. After an attacker dismantles the device and uses a USB-to-UART cable to connect the device, he can use the 1234 password for the root account to login to the system. Furthermore, an attacker can start the device's TELNET service as a backdoor.
CVE-2018-9083	In System Management Module (SMM) versions prior to 1.06, the SMM contains weak default root credentials which could be used to log in to the device OS -- if the attacker manages to enable SSH or Telnet connections via some other vulnerability.
CVE-2018-7788	A CWE-255 Credentials Management vulnerability exists in Modicon Quantum with firmware versions prior to V2.40. which could cause a Denial Of Service when using a Telnet connection.
CVE-2018-6401	Meross MSS110 devices before 1.1.24 contain a TELNET listener providing access for an undocumented admin account with a blank password.
CVE-2018-6312	A privileged account with a weak default password on the Foxconn femtocell FEMTO AP-FC4064-T version AP_GT_B38_5.8.3lb15-W47 LTE Build 15 can be used to turn on the TELNET service via the web interface, which allows root login without any password. This vulnerability will lead to full system compromise and disclosure of user communications. The foxconn account with an 8-character lowercase alphabetic password can be used.
CVE-2018-6210	D-Link DIR-620 devices, with a certain Rostelekom variant of firmware 1.0.37, have a hardcoded rostel account, which makes it easier for remote attackers to obtain access via a TELNET session.
CVE-2018-5770	An issue was discovered on Tenda AC15 devices. A remote, unauthenticated attacker can make a request to /goform/telnet, creating a telnetd service on the device. This service is password protected; however, several default accounts exist on the device that are root accounts, which can be used to log in.
CVE-2018-5071	Persistent XSS exists in the web server on Cobham Sea Tel 116 build 222429 satellite communication system devices: remote attackers can inject malicious JavaScript code using the device's TELNET shell built-in commands, as demonstrated by the "set ship name" command. This is similar to a Cross Protocol Injection with SNMP.
CVE-2018-4059	An exploitable unsafe default configuration vulnerability exists in the TURN server function of coTURN prior to version 4.5.0.9. By default, the TURN server runs an unauthenticated telnet admin portal on the loopback interface. This can provide administrator access to the TURN server configuration, which can lead to additional attacks. An attacker who can get access to the telnet port can gain administrator access to the TURN server.
CVE-2018-20764	A buffer overflow exists in HelpSystems tcpcrypt on Linux, used for BoKS encrypted telnet through BoKS version 6.7.1. Since tcpcrypt is setuid, exploitation leads to privilege escalation.
CVE-2018-20432	D-Link COVR-2600R and COVR-3902 Kit before 1.01b05Beta01 use hardcoded credentials for telnet connection, which allows unauthenticated attackers to gain privileged access to the router, and to extract sensitive data or modify the configuration.
CVE-2018-19990	In the /HNAP1/SetWiFiVerifyAlpha message, the WPSPIN parameter is vulnerable, and the vulnerability affects D-Link DIR-822 B1 202KRb06 devices. In the SetWiFiVerifyAlpha.php source code, the WPSPIN parameter is saved in the $rphyinf1."/media/wps/enrollee/pin" and $rphyinf2."/media/wps/enrollee/pin" and $rphyinf3."/media/wps/enrollee/pin" internal configuration memory without any regex checking. And in the do_wps function of the wps.php source code, the data in $rphyinf3."/media/wps/enrollee/pin" is used with the wpatalk command without any regex checking. A vulnerable /HNAP1/SetWiFiVerifyAlpha XML message could have shell metacharacters in the WPSPIN element such as the `telnetd` string.
CVE-2018-19989	In the /HNAP1/SetQoSSettings message, the uplink parameter is vulnerable, and the vulnerability affects D-Link DIR-822 Rev.B 202KRb06 and DIR-822 Rev.C 3.10B06 devices. In the SetQoSSettings.php source code, the uplink parameter is saved in the /bwc/entry:1/bandwidth and /bwc/entry:2/bandwidth internal configuration memory without any regex checking. And in the bwc_tc_spq_start, bwc_tc_wfq_start, and bwc_tc_adb_start functions of the bwcsvcs.php source code, the data in /bwc/entry:1/bandwidth and /bwc/entry:2/bandwidth is used with the tc command without any regex checking. A vulnerable /HNAP1/SetQoSSettings XML message could have shell metacharacters in the uplink element such as the `telnetd` string.
CVE-2018-19988	In the /HNAP1/SetClientInfoDemo message, the AudioMute and AudioEnable parameters are vulnerable, and the vulnerabilities affect D-Link DIR-868L Rev.B 2.05B02 devices. In the SetClientInfoDemo.php source code, the AudioMute and AudioEnble parameters are saved in the ShellPath script file without any regex checking. After the script file is executed, the command injection occurs. It needs to bypass the wget command option with a single quote. A vulnerable /HNAP1/SetClientInfoDemo XML message could have single quotes and backquotes in the AudioMute or AudioEnable element, such as the '`telnetd`' string.
CVE-2018-19987	D-Link DIR-822 Rev.B 202KRb06, DIR-822 Rev.C 3.10B06, DIR-860L Rev.B 2.03.B03, DIR-868L Rev.B 2.05B02, DIR-880L Rev.A 1.20B01_01_i3se_BETA, and DIR-890L Rev.A 1.21B02_BETA devices mishandle IsAccessPoint in /HNAP1/SetAccessPointMode. In the SetAccessPointMode.php source code, the IsAccessPoint parameter is saved in the ShellPath script file without any regex checking. After the script file is executed, the command injection occurs. A vulnerable /HNAP1/SetAccessPointMode XML message could have shell metacharacters in the IsAccessPoint element such as the `telnetd` string.
CVE-2018-19986	In the /HNAP1/SetRouterSettings message, the RemotePort parameter is vulnerable, and the vulnerability affects D-Link DIR-818LW Rev.A 2.05.B03 and DIR-822 B1 202KRb06 devices. In the SetRouterSettings.php source code, the RemotePort parameter is saved in the $path_inf_wan1."/web" internal configuration memory without any regex checking. And in the IPTWAN_build_command function of the iptwan.php source code, the data in $path_inf_wan1."/web" is used with the iptables command without any regex checking. A vulnerable /HNAP1/SetRouterSettings XML message could have shell metacharacters in the RemotePort element such as the `telnetd` string.
CVE-2018-19977	A command injection (missing input validation, escaping) in the ftp upgrade configuration interface on the Auerswald COMfort 1200 IP phone 3.4.4.1-10589 allows an authenticated remote attacker (simple user) -- in the same network as the device -- to trigger OS commands (like starting telnetd or opening a reverse shell) via a POST request to the web server.
CVE-2018-18995	Pluto Safety PLC Gateway Ethernet devices ABB GATE-E1 and GATE-E2 all versions do not allow authentication to be configured on administrative telnet or web interfaces, which could enable various effects vectors, including conducting device resets, reading or modifying registers, and changing configuration settings such as IP addresses.
CVE-2018-16216	A command injection (missing input validation, escaping) in the monitoring or memory status web interface in AudioCodes 405HD (firmware 2.2.12) VoIP phone allows an authenticated remote attacker in the same network as the device to trigger OS commands (like starting telnetd or opening a reverse shell) via a POST request to the web server. In combination with another attack (unauthenticated password change), the attacker can circumvent the authentication requirement.
CVE-2018-15557	An issue was discovered in the Quantenna WiFi Controller on Telus Actiontec WEB6000Q v1.1.02.22 devices. An attacker can statically set his/her IP to anything on the 169.254.1.0/24 subnet, and obtain root access by connecting to 169.254.1.2 port 23 with telnet/netcat.
CVE-2018-15399	A vulnerability in the TCP syslog module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust the 1550-byte buffers on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to a missing boundary check in an internal function. An attacker could exploit this vulnerability by establishing a man-in-the-middle position between an affected device and its configured TCP syslog server and then maliciously modifying the TCP header in segments that are sent from the syslog server to the affected device. A successful exploit could allow the attacker to exhaust buffer on the affected device and cause all TCP-based features to stop functioning, resulting in a DoS condition. The affected TCP-based features include AnyConnect SSL VPN, clientless SSL VPN, and management connections such as Secure Shell (SSH), Telnet, and HTTPS.
CVE-2018-14528	Invoxia NVX220 devices allow TELNET access as admin with a default password.
CVE-2018-13109	All ADB broadband gateways / routers based on the Epicentro platform are affected by an authorization bypass vulnerability where attackers are able to access and manipulate settings within the web interface that are forbidden to end users (e.g., by the ISP). An attacker would be able to enable the TELNET server or other settings as well.
CVE-2018-12925	Baseon Lantronix MSS devices do not require a password for TELNET access.
CVE-2018-12924	Sollae Serial-Ethernet-Module and Remote-I/O-Device-Server devices have a default password of sollae for the TELNET service.
CVE-2018-12668	SV3C L-SERIES HD CAMERA V2.3.4.2103-S50-NTD-B20170508B and V2.3.4.2103-S50-NTD-B20170823B devices have a Hard-coded Password.
CVE-2018-12526	Telesquare SDT-CS3B1 and SDT-CW3B1 devices through 1.2.0 have a default factory account. Remote attackers can obtain access to the device via TELNET using a hardcoded account.
CVE-2018-12072	An issue was discovered in Cloud Media Popcorn A-200 03-05-130708-21-POP-411-000 firmware. It is configured to provide TELNET remote access (without a password) that pops a shell as root. If an attacker can connect to port 23 on the device, he can completely compromise it.
CVE-2018-11682	DISPUTED Default and unremovable support credentials allow attackers to gain total super user control of an IoT device through a TELNET session to products using the Stanza Lutron integration protocol Revision M to Revision Y. NOTE: The vendor disputes this id as not being a vulnerability because what can be done through the ports revolve around controlling lighting, not code execution. A certain set of commands are listed, which bear some similarity to code, but they are not arbitrary and do not allow admin-level control of a machine.
CVE-2018-11681	DISPUTED Default and unremovable support credentials (user:nwk password:nwk2) allow attackers to gain total super user control of an IoT device through a TELNET session to products using the RadioRA 2 Lutron integration protocol Revision M to Revision Y. NOTE: The vendor disputes this id as not being a vulnerability because what can be done through the ports revolve around controlling lighting, not code execution. A certain set of commands are listed, which bear some similarity to code, but they are not arbitrary and do not allow admin-level control of a machine.
CVE-2018-11629	DISPUTED Default and unremovable support credentials (user:lutron password:integration) allow attackers to gain total super user control of an IoT device through a TELNET session to products using the HomeWorks QS Lutron integration protocol Revision M to Revision Y. NOTE: The vendor disputes this id as not being a vulnerability because what can be done through the ports revolve around controlling lighting, not code execution. A certain set of commands are listed, which bear some similarity to code, but they are not arbitrary and do not allow admin-level control of a machine.
CVE-2018-1146	A remote unauthenticated user can enable telnet on the Belkin N750 using firmware version 1.10.22 by sending a crafted HTTP request to set.cgi. When enabled the telnet session requires no password and provides root access.
CVE-2018-10968	On D-Link DIR-550A and DIR-604M devices through v2.10KR, a malicious user can use a default TELNET account to get unauthorized access to vulnerable devices, aka a backdoor access vulnerability.
CVE-2018-10698	An issue was discovered on Moxa AWK-3121 1.14 devices. The device enables an unencrypted TELNET service by default. This allows an attacker who has been able to gain an MITM position to easily sniff the traffic between the device and the user. Also an attacker can easily connect to the TELNET daemon using the default credentials if they have not been changed by the user.
CVE-2018-10694	An issue was discovered on Moxa AWK-3121 1.14 devices. The device provides a Wi-Fi connection that is open and does not use any encryption mechanism by default. An administrator who uses the open wireless connection to set up the device can allow an attacker to sniff the traffic passing between the user's computer and the device. This can allow an attacker to steal the credentials passing over the HTTP connection as well as TELNET traffic. Also an attacker can MITM the response and infect a user's computer very easily as well.
CVE-2018-10024	ubiQuoss Switch VP5208A creates a bcm_password file at /cgi-bin/ with the user credentials in cleartext when a failed login attempt occurs. The file can be reached via an HTTP request. The credentials can be used to access the system via SSH (or TELNET if it is enabled).
CVE-2018-0061	A denial of service vulnerability in the telnetd service on Junos OS allows remote unauthenticated users to cause high CPU usage which may affect system performance. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D81 on SRX Series; 12.3 versions prior to 12.3R12-S11; 12.3X48 versions prior to 12.3X48-D80 on SRX Series; 15.1 versions prior to 15.1R7; 15.1X49 versions prior to 15.1X49-D150, 15.1X49-D160 on SRX Series; 15.1X53 versions prior to 15.1X53-D59 on EX2300/EX3400 Series; 15.1X53 versions prior to 15.1X53-D68 on QFX10K Series; 15.1X53 versions prior to 15.1X53-D235 on QFX5200/QFX5110 Series; 15.1X53 versions prior to 15.1X53-D495 on NFX Series; 16.1 versions prior to 16.1R4-S12, 16.1R6-S6, 16.1R7; 16.2 versions prior to 16.2R2-S7, 16.2R3; 17.1 versions prior to 17.1R2-S9, 17.1R3; 17.2 versions prior to 17.2R2-S6, 17.2R3; 17.2X75 versions prior to 17.2X75-D100; 17.3 versions prior to 17.3R2-S4, 17.3R3; 17.4 versions prior to 17.4R1-S5, 17.4R2; 18.2X75 versions prior to 18.2X75-D5.
CVE-2018-0025	When an SRX Series device is configured to use HTTP/HTTPS pass-through authentication services, a client sending authentication credentials in the initial HTTP/HTTPS session is at risk that these credentials may be captured during follow-on HTTP/HTTPS requests by a malicious actor through a man-in-the-middle attack or by authentic servers subverted by malicious actors. FTP, and Telnet pass-through authentication services are not affected. Affected releases are Juniper Networks SRX Series: 12.1X46 versions prior to 12.1X46-D67 on SRX Series; 12.3X48 versions prior to 12.3X48-D25 on SRX Series; 15.1X49 versions prior to 15.1X49-D35 on SRX Series.
CVE-2017-9851	DISPUTED An issue was discovered in SMA Solar Technology products. By sending nonsense data or setting up a TELNET session to the database port of Sunny Explorer, the application can be crashed. NOTE: the vendor reports that the maximum possible damage is a communication failure. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected.
CVE-2017-9482	The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) devices allows remote attackers to obtain root access to the Network Processor (NP) Linux system by enabling a TELNET daemon (through CVE-2017-9479 exploitation) and then establishing a TELNET session.
CVE-2017-8772	On BE126 WIFI repeater 1.0 devices, an attacker can log into telnet (which is open by default) with default credentials as root (username:"root" password:"root") and can: 1. Read the entire file system; 2. Write to the file system; or 3. Execute any code that attacker desires (malicious or not).
CVE-2017-8771	On BE126 WIFI repeater 1.0 devices, an attacker can log into telnet (which is open by default) with default credentials as root (username:"root" password:"root"). The attacker can make a user that is connected to the repeater click on a malicious link that will log into the telnet and will infect the device with malicious code.
CVE-2017-8415	An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. The device has a custom telnet daemon as a part of the busybox and retrieves the password from the shadow file using the function getspnam at address 0x00053894. Then performs a crypt operation on the password retrieved from the user at address 0x000538E0 and performs a strcmp at address 0x00053908 to check if the password is correct or incorrect. However, the /etc/shadow file is a part of CRAM-FS filesystem which means that the user cannot change the password and hence a hardcoded hash in /etc/shadow is used to match the credentials provided by the user. This is a salted hash of the string "admin" and hence it acts as a password to the device which cannot be changed as the whole filesystem is read only.
CVE-2017-8224	Wireless IP Camera (P2P) WIFICAM devices have a backdoor root account that can be accessed with TELNET.
CVE-2017-7964	Zyxel WRE6505 devices have a default TELNET password of 1234 for the root and admin accounts, which makes it easier for remote attackers to conduct DNS hijacking attacks by reconfiguring the built-in dnshijacker process.
CVE-2017-7649	The network enabled distribution of Kura before 2.1.0 takes control over the device's firewall setup but does not allow IPv6 firewall rules to be configured. Still the Equinox console port 5002 is left open, allowing to log into Kura without any user credentials over unencrypted telnet and executing commands using the Equinox "exec" command. As the process is running as "root" full control over the device can be acquired. IPv6 is also left in auto-configuration mode, accepting router advertisements automatically and assigns a MAC address based IPv6 address.
CVE-2017-7576	DragonWave Horizon 1.01.03 wireless radios have hardcoded login credentials (such as the username of energetic and password of wireless) meant to allow the vendor to access the devices. These credentials can be used in the web interface or by connecting to the device via TELNET. This is fixed in recent versions including 1.4.8.
CVE-2017-6900	An issue was discovered in Riello NetMan 204 14-2 and 15-2. The issue is with the login script and wrongpass Python script used for authentication. When calling wrongpass, the variables $VAL0 and $VAL1 should be enclosed in quotes to prevent the potential for Bash command injection. Further to this, VAL0 and VAL1 should be sanitised to ensure they do not contain malicious characters. Passing it the username of '-' will cause it to time out and log the user in because of poor error handling. This will log the attacker in as an administrator where the telnet / ssh services can be enabled, and the credentials for local users can be reset. Also, login.cgi accepts the username as a GET parameter, so login can be achieved by browsing to the /cgi-bin/login.cgi?username=-%20a URI.
CVE-2017-6650	A vulnerability in the Telnet CLI command of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus Series Switches could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation of command arguments. An attacker could exploit this vulnerability by injecting crafted command arguments into the Telnet CLI command. An exploit could allow the attacker to read or write arbitrary files at the user's privilege level outside of the user's path. Cisco Bug IDs: CSCvb86771.
CVE-2017-6351	The WePresent WiPG-1500 device with firmware 1.0.3.7 has a manufacturer account that has a hardcoded username / password. Once the device is set to DEBUG mode, an attacker can connect to the device using the telnet protocol and log into the device with the 'abarco' hardcoded manufacturer account. This account is not documented, nor is the DEBUG feature or the use of telnetd on port tcp/5885.
CVE-2017-5544	An issue was discovered on FiberHome Fengine S5800 switches V210R240. An unauthorized attacker can access the device's SSH service, using a password cracking tool to establish SSH connections quickly. This will trigger an increase in the SSH login timeout (each of the login attempts will occupy a connection slot for a longer time). Once this occurs, legitimate login attempts via SSH/telnet will be refused, resulting in a denial of service; you must restart the device.
CVE-2017-5495	All versions of Quagga, 0.93 through 1.1.0, are vulnerable to an unbounded memory allocation in the telnet 'vty' CLI, leading to a Denial-of-Service of Quagga daemons, or even the entire host. When Quagga daemons are configured with their telnet CLI enabled, anyone who can connect to the TCP ports can trigger this vulnerability, prior to authentication. Most distributions restrict the Quagga telnet interface to local access only by default. The Quagga telnet interface 'vty' input buffer grows automatically, without bound, so long as a newline is not entered. This allows an attacker to cause the Quagga daemon to allocate unbounded memory by sending very long strings without a newline. Eventually the daemon is terminated by the system, or the system itself runs out of memory. This is fixed in Quagga 1.1.1 and Free Range Routing (FRR) Protocol Suite 2017-01-10.
CVE-2017-3881	A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges. The Cluster Management Protocol utilizes Telnet internally as a signaling and command protocol between cluster members. The vulnerability is due to the combination of two factors: (1) the failure to restrict the use of CMP-specific Telnet options only to internal, local communications between cluster members and instead accept and process such options over any Telnet connection to an affected device; and (2) the incorrect processing of malformed CMP-specific Telnet options. An attacker could exploit this vulnerability by sending malformed CMP-specific Telnet options while establishing a Telnet session with an affected Cisco device configured to accept Telnet connections. An exploit could allow an attacker to execute arbitrary code and obtain full control of the device or cause a reload of the affected device. This affects Catalyst switches, Embedded Service 2020 switches, Enhanced Layer 2 EtherSwitch Service Module, Enhanced Layer 2/3 EtherSwitch Service Module, Gigabit Ethernet Switch Module (CGESM) for HP, IE Industrial Ethernet switches, ME 4924-10GE switch, RF Gateway 10, and SM-X Layer 2/3 EtherSwitch Service Module. Cisco Bug IDs: CSCvd48893.
CVE-2017-3879	A Denial of Service vulnerability in the remote login functionality for Cisco NX-OS Software running on Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause a process used for login to terminate unexpectedly and the login attempt to fail. There is no impact to user traffic flowing through the device. The attacker could use either a Telnet or an SSH client for the remote login attempt. Affected Products: This vulnerability affects Cisco Nexus 9000 Series Switches that are running Cisco NX-OS Software and are configured to allow remote Telnet connections to the device. More Information: CSCuy25824. Known Affected Releases: 7.0(3)I3(1) 8.3(0)CV(0.342) 8.3(0)CV(0.345). Known Fixed Releases: 8.3(0)CV(0.362) 8.0(1) 7.0(3)IED5(0.19) 7.0(3)IED5(0) 7.0(3)I4(1) 7.0(3)I4(0.8) 7.0(3)I2(2e) 7.0(3)F1(1.22) 7.0(3)F1(1) 7.0(3)F1(0.230).
CVE-2017-3878	A Denial of Service vulnerability in the Telnet remote login functionality of Cisco NX-OS Software running on Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause a Telnet process used for login to terminate unexpectedly and the login attempt to fail. There is no impact to user traffic flowing through the device. Affected Products: This vulnerability affects Cisco Nexus 9000 Series Switches that are running Cisco NX-OS Software and are configured to allow remote Telnet connections to the device. More Information: CSCux46778. Known Affected Releases: 7.0(3)I3(0.170). Known Fixed Releases: 7.0(3)I3(1) 7.0(3)I3(0.257) 7.0(3)I3(0.255) 7.0(3)I2(2e) 7.0(3)F1(1.22) 7.0(3)F1(1).
CVE-2017-3765	In Enterprise Networking Operating System (ENOS) in Lenovo and IBM RackSwitch and BladeCenter products, an authentication bypass known as "HP Backdoor" was discovered during a Lenovo security audit in the serial console, Telnet, SSH, and Web interfaces. This bypass mechanism can be accessed when performing local authentication under specific circumstances. If exploited, admin-level access to the switch is granted.
CVE-2017-17107	Zivif PR115-204-P-RS V2.3.4.2103 web cameras contain a hard-coded cat1029 password for the root user. The SONIX operating system's setup renders this password unchangeable and it can be used to access the device via a TELNET session.
CVE-2017-16725	A Stack-based Buffer Overflow issue was discovered in Xiongmai Technology IP Cameras and DVRs using the NetSurveillance Web interface. The stack-based buffer overflow vulnerability has been identified, which may allow an attacker to execute code remotely or crash the device. After rebooting, the device restores itself to a more vulnerable state in which Telnet is accessible.
CVE-2017-15376	The TELNET service in Mobatek MobaXterm 10.4 does not require authentication, which allows remote attackers to execute arbitrary commands via TCP port 23.
CVE-2017-15300	The miner statistics HTTP API in EWBF Cuda Zcash Miner Version 0.3.4b hangs on incoming TCP connections until some sort of request is made (such as "GET / HTTP/1.1"), which allows for a Denial of Service attack preventing a user from viewing their mining statistics by an attacker opening a session with telnet or netcat and connecting to the miner on the HTTP API port.
CVE-2017-14459	An exploitable OS Command Injection vulnerability exists in the Telnet, SSH, and console login functionality of Moxa AWK-3131A Industrial IEEE 802.11a/b/g/n wireless AP/bridge/client in firmware versions 1.4 to 1.7 (current). An attacker can inject commands via the username parameter of several services (SSH, Telnet, console), resulting in remote, unauthenticated, root-level operating system command execution.
CVE-2017-14421	D-Link DIR-850L REV. B (with firmware through FW208WWb02) devices have a hardcoded password of wrgac25_dlink.2013gui_dir850l for the Alphanetworks account upon device reset, which allows remote attackers to obtain root access via a TELNET session.
CVE-2017-14202	Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in the shell component of Zephyr allows a serial or telnet connected user to cause a crash, possibly with arbitrary code execution. This issue affects: Zephyr shell versions prior to 1.14.0 on all.
CVE-2017-14201	Use After Free vulnerability in the Zephyr shell allows a serial or telnet connected user to cause denial of service, and possibly remote code execution. This issue affects: Zephyr shell versions prior to 1.14.0 on all.
CVE-2017-12988	The telnet parser in tcpdump before 4.9.2 has a buffer over-read in print-telnet.c:telnet_parse().
CVE-2017-12726	A Use of Hard-coded Password issue was discovered in Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pump, Version 1.1, 1.5, and 1.6. Telnet on the pump uses hardcoded credentials, which can be used if the pump is configured to allow external communications. Smiths Medical assesses that it is not possible to upload files via Telnet and the impact of this vulnerability is limited to the communications module.
CVE-2017-12123	An exploitable clear text transmission of password vulnerability exists in the web server and telnet functionality of Moxa EDR-810 V4.1 build 17030317. An attacker can look at network traffic to get the admin password for the device. The attacker can then use the credentials to login as admin.
CVE-2017-11632	An issue was discovered on Wireless IP Camera 360 devices. A root account with a known SHA-512 password hash exists, which makes it easier for remote attackers to obtain administrative access via a TELNET session.
CVE-2017-11614	MEDHOST Connex contains hard-coded credentials that are used for customer database access. An attacker with knowledge of the hard-coded credentials and the ability to communicate directly with the database may be able to obtain or modify sensitive patient and financial information. Connex utilizes an IBM i DB2 user account for database access. The account name is HMSCXPDN. Its password is hard-coded in multiple places in the application. Customers do not have the option to change this password. The account has elevated DB2 roles, and can access all objects or database tables on the customer DB2 database. This account can access data through ODBC, FTP, and TELNET. Customers without Connex installed are still vulnerable because the MEDHOST setup program creates this account.
CVE-2017-11436	D-Link DIR-615 before v20.12PTb04 has a second admin account with a 0x1 BACKDOOR value, which might allow remote attackers to obtain access via a TELNET connection.
CVE-2017-10721	Recently it was discovered as a part of the research on IoT devices in the most recent firmware for Shekar Endoscope that the device has Telnet functionality enabled by default. This device acts as an Endoscope camera that allows its users to use it in various industrial systems and settings, car garages, and also in some cases in the medical clinics to get access to areas that are difficult for a human being to reach. Any breach of this system can allow an attacker to get access to video feed and pictures viewed by that user and might allow them to get a foot hold in air gapped networks especially in case of nation critical infrastructure/industries.
CVE-2017-10621	A denial of service vulnerability in telnetd service on Juniper Networks Junos OS allows remote unauthenticated attackers to cause a denial of service. Affected Junos OS releases are: 12.1X46 prior to 12.1X46-D71; 12.3X48 prior to 12.3X48-D50; 14.1 prior to 14.1R8-S5, 14.1R9; 14.1X53 prior to 14.1X53-D50; 14.2 prior to 14.2R7-S9, 14.2R8; 15.1 prior to 15.1F2-S16, 15.1F5-S7, 15.1F6-S6, 15.1R5-S2, 15.1R6; 15.1X49 prior to 15.1X49-D90; 15.1X53 prior to 15.1X53-D47; 16.1 prior to 16.1R4-S1, 16.1R5; 16.2 prior to 16.2R1-S3, 16.2R2;
CVE-2017-10615	A vulnerability in the pluggable authentication module (PAM) of Juniper Networks Junos OS may allow an unauthenticated network based attacker to potentially execute arbitrary code or crash daemons such as telnetd or sshd that make use of PAM. Affected Juniper Networks Junos OS releases are: 14.1 from 14.1R5 prior to 14.1R8-S4, 14.1R9; 14.1X53 prior to 14.1X53-D50 on EX and QFX series; 14.2 from 14.2R3 prior to 14.2R7-S8, 14.2R8; No other Junos OS releases are affected by this issue. No other Juniper Networks products are affected by this issue.
CVE-2017-10614	A vulnerability in telnetd service on Junos OS allows a remote attacker to cause a limited memory and/or CPU consumption denial of service attack. This issue was found during internal product security testing. Affected releases are Juniper Networks Junos OS 12.1X46 prior to 12.1X46-D45; 12.3X48 prior to 12.3X48-D30; 14.1 prior to 14.1R4-S9, 14.1R8; 14.2 prior to 14.2R6; 15.1 prior to 15.1F5, 15.1R3; 15.1X49 prior to 15.1X49-D40; 15.1X53 prior to 15.1X53-D232, 15.1X53-D47.
CVE-2017-10601	A specific device configuration can result in a commit failure condition. When this occurs, a user is logged in without being prompted for a password while trying to login through console, ssh, ftp, telnet or su, etc., This issue relies upon a device configuration precondition to occur. Typically, device configurations are the result of a trusted administrative change to the system's running configuration. The following error messages may be seen when this failure occurs: mgd: error: commit failed: (statements constraint check failed) Warning: Commit failed, activating partial configuration. Warning: Edit the router configuration to fix these errors. If the administrative changes are not made that result in such a failure, then this issue is not seen. No other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS 12.3 prior to 12.3R10, 12.3R11; 12.3X48 prior to 12.3X48-D20; 13.2 prior to 13.2R8; 13.3 prior to 13.3R7; 14.1 prior to 14.1R4-S12, 14.1R5, 14.1R6; 14.1X53 prior to 14.1X53-D30; 14.2 prior to 14.2R4; 15.1 prior to 15.1F2, 15.1F3, 15.1R2.
CVE-2016-9497	Hughes high-performance broadband satellite modems, models HN7740S DW7000 HN7000S/SM, is vulnerable to an authentication bypass using an alternate path or channel. By default, port 1953 is accessible via telnet and does not require authentication. An unauthenticated remote user can access many administrative commands via this interface, including rebooting the modem.
CVE-2016-9495	Hughes high-performance broadband satellite modems, models HN7740S DW7000 HN7000S/SM, uses hard coded credentials. Access to the device's default telnet port (23) can be obtained through using one of a few default credentials shared among all devices.
CVE-2016-7115	Buffer overflow in the handle_packet function in mactelnet.c in the client in MAC-Telnet 0.4.3 and earlier allows remote TELNET servers to execute arbitrary code via a long string in an MT_CPTYPE_PASSSALT control packet.
CVE-2016-6535	AVer Information EH6108H+ devices with firmware X9.03.24.00.07l have hardcoded accounts, which allows remote attackers to obtain root access by leveraging knowledge of the credentials and establishing a TELNET session.
CVE-2016-5791	An Improper Authentication issue was discovered in JanTek JTC-200, all versions. The improper authentication could provide an undocumented BusyBox Linux shell accessible over the TELNET service without any authentication.
CVE-2016-5081	ZModo ZP-NE14-S and ZP-IBH-13W devices have a hardcoded root password, which makes it easier for remote attackers to obtain access via a TELNET session.
CVE-2016-5075	CloudView NMS before 2.10a has XSS via a TELNET login.
CVE-2016-4802	Multiple untrusted search path vulnerabilities in cURL and libcurl before 7.49.1, when built with SSPI or telnet is enabled, allow local users to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse (1) security.dll, (2) secur32.dll, or (3) ws2_32.dll in the application or current working directory.
CVE-2016-1888	The telnetd service in FreeBSD 9.3, 10.1, 10.2, 10.3, and 11.0 allows remote attackers to inject arguments to login and bypass authentication via vectors involving a "sequence of memory allocation failures."
CVE-2016-1329	Cisco NX-OS 6.0(2)U6(1) through 6.0(2)U6(5) on Nexus 3000 devices and 6.0(2)A6(1) through 6.0(2)A6(5) and 6.0(2)A7(1) on Nexus 3500 devices has hardcoded credentials, which allows remote attackers to obtain root privileges via a (1) TELNET or (2) SSH session, aka Bug ID CSCuy25800.
CVE-2016-10307	Trango ApexLynx 2.0, ApexOrion 2.0, GigaLynx 2.0, GigaOrion 2.0, and StrataLink 3.0 devices have a built-in, hidden root account, with a default password for which the MD5 hash value is public (but the cleartext value is perhaps not yet public). This account is accessible via SSH and/or TELNET, and grants access to the underlying embedded UNIX OS on the device, allowing full control over it.
CVE-2016-10306	Trango Altum AC600 devices have a built-in, hidden root account, with a default password of abcd1234. This account is accessible via SSH and/or TELNET, and grants access to the underlying embedded UNIX OS on the device, allowing full control over it.
CVE-2016-10305	Trango Apex <= 2.1.1, ApexLynx < 2.0, ApexOrion < 2.0, ApexPlus <= 3.2.0, Giga <= 2.6.1, GigaLynx < 2.0, GigaOrion < 2.0, GigaPlus <= 3.2.3, GigaPro <= 1.4.1, StrataLink < 3.0, and StrataPro devices have a built-in, hidden root account, with a default password that was once stored in cleartext within a software update package on a Trango FTP server. This account is accessible via SSH and/or TELNET, and grants access to the underlying embedded UNIX OS on the device, allowing full control over it.
CVE-2016-10178	An issue was discovered on the D-Link DWR-932B router. HELODBG on port 39889 (UDP) launches the "/sbin/telnetd -l /bin/sh" command.
CVE-2016-10177	An issue was discovered on the D-Link DWR-932B router. Undocumented TELNET and SSH services provide logins to admin with the password admin and root with the password 1234.
CVE-2015-7755	Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before 6.3.0r13b, 6.3.0r14 before 6.3.0r14b, 6.3.0r15 before 6.3.0r15b, 6.3.0r16 before 6.3.0r16b, 6.3.0r17 before 6.3.0r17b, 6.3.0r18 before 6.3.0r18b, 6.3.0r19 before 6.3.0r19b, and 6.3.0r20 before 6.3.0r21 allows remote attackers to obtain administrative access by entering an unspecified password during a (1) SSH or (2) TELNET session.
CVE-2015-7289	Arris DG860A, TG862A, and TG862G devices with firmware TS0703128_100611 through TS0705125D_031115 have a hardcoded administrator password derived from a serial number, which makes it easier for remote attackers to obtain access via the web management interface, SSH, TELNET, or SNMP.
CVE-2015-7258	ZTE ADSL ZXV10 W300 modems W300V2.1.0f_ER7_PE_O57 and W300V2.1.0h_ER7_PE_O57 allow remote authenticated users to obtain user passwords by displaying user information in a Telnet connection.
CVE-2015-7251	ZTE ZXHN H108N R1A devices before ZTE.bhs.ZXHNH108NR1A.k_PE have a hardcoded password of root for the root account, which allows remote attackers to obtain administrative access via a TELNET session.
CVE-2015-6382	Cisco ASR 5000 devices with software 16.0(900) allow remote attackers to cause a denial of service (telnetd process restart) via a TELNET connection, aka Bug ID CSCuv25815.
CVE-2015-4195	Cisco IOS XR 5.1.1.K9SEC allows remote authenticated users to cause a denial of service (vty error, and SSH and TELNET outage) via a crafted disconnect action within an SSH session, aka Bug ID CSCul63127.
CVE-2015-3956	Hospira Plum A+ Infusion System version 13.4 and prior, Plum A+3 Infusion System version 13.6 and prior, and Symbiq Infusion System, version 3.13 and prior accept drug libraries, firmware updates, pump commands, and unauthorized configuration changes from unauthenticated devices on the host network. Hospira recommends that customers close Port 20/FTP and Port 23/TELNET on the affected devices. Hospira has also released the Plum 360 Infusion System which is not vulnerable to this issue.
CVE-2015-3954	Hospira Plum A+ Infusion System version 13.4 and prior, Plum A+3 Infusion System version 13.6 and prior, and Symbiq Infusion System, version 3.13 and prior give unauthenticated users root privileges on Port 23/TELNET by default. An unauthorized user could issue commands to the pump. Hospira recommends that customers close Port 23/TELNET on the affected devices. Hospira has also released the Plum 360 Infusion System which is not vulnerable to this issue.
CVE-2015-3953	Hard-coded accounts may be used to access Hospira Plum A+ Infusion System version 13.4 and prior, Plum A+3 Infusion System version 13.6 and prior, and Symbiq Infusion System, version 3.13 and prior. Hospira recommends that customers close Port 20/FTP and Port 23/TELNET on the affected devices. Hospira has also released the Plum 360 Infusion System which is not vulnerable to this issue.
CVE-2015-3952	Wireless keys are stored in plain text on Hospira Plum A+ Infusion System version 13.4 and prior, Plum A+3 Infusion System version 13.6 and prior, and Symbiq Infusion System, version 3.13 and prior. Hospira recommends that customers close Port 20/FTP and Port 23/TELNET on the affected devices. Hospira has also released the Plum 360 Infusion System which is not vulnerable to this issue.
CVE-2015-3939	Directory traversal vulnerability in the NC854 and NC856 modules for IDS RTU 850C devices allows remote authenticated users to read arbitrary files via unspecified vectors involving an internal web server, as demonstrated by reading a TELNET credentials file.
CVE-2015-3459	The communication module on the Hospira LifeCare PCA Infusion System before 7.0 does not require authentication for root TELNET sessions, which allows remote attackers to modify the pump configuration via unspecified commands.
CVE-2015-2897	Sierra Wireless ALEOS before 4.4.2 on AirLink ES, GX, and LS devices has hardcoded root accounts, which makes it easier for remote attackers to obtain administrative access via a (1) SSH or (2) TELNET session.
CVE-2015-2874	Seagate GoFlex Satellite, Seagate Wireless Mobile Storage, Seagate Wireless Plus Mobile Storage, and LaCie FUEL devices with firmware before 3.4.1.105 have a default password of root for the root account, which allows remote attackers to obtain administrative access via a TELNET session.
CVE-2015-2866	SQL injection vulnerability on the Grandstream GXV3611_HD camera with firmware before 1.0.3.9 beta allows remote attackers to execute arbitrary SQL commands by attempting to establish a TELNET session with a crafted username.
CVE-2015-1012	Wireless keys are stored in plain text on version 5 of the Hospira LifeCare PCA Infusion System. According to Hospira, version 3 of the LifeCare PCA Infusion System is not indicated for wireless use, is not shipped with wireless capabilities, and should not be modified to be used in a wireless capacity in a clinical setting. Hospira has developed a new version of the PCS Infusion System, version 7.0 that addresses the identified vulnerabilities. Version 7.0 has Port 20/FTP and Port 23/TELNET closed by default to prevent unauthorized access.
CVE-2015-0924	Ceragon FibeAir IP-10 bridges have a default password for the root account, which makes it easier for remote attackers to obtain access via a (1) HTTP, (2) SSH, (3) TELNET, or (4) CLI session.
CVE-2015-0776	telnetd in Cisco IOS XR 5.0.1 on Network Convergence System 6000 devices allows remote attackers to cause a denial of service (device reload) via a malformed TELNET packet, aka Bug ID CSCuq31566.
CVE-2015-0775	The banner (aka MOTD) implementation in Cisco NX-OS 4.1(2)E1(1f) on Nexus 4000 devices, 5.2(1)SV3(2.1) on Nexus 1000V devices, 6.0(2)N2(2) on Nexus 5000 devices, 6.2(11) on MDS 9000 devices, 6.2(12) on Nexus 7000 devices, 7.0(3) on Nexus 9000 devices, and 7.2(0)ZN(99.67) on Nexus 3000 devices allows remote attackers to cause a denial of service (login process reset) via an unspecified terminal-session request during TELNET session setup, aka Bug IDs CSCuo10554, CSCuu75466, CSCuu75471, CSCuu75484, CSCuu75498, CSCuu77170, and CSCuu77182.
CVE-2015-0014	Buffer overflow in the Telnet service in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, and Windows Server 2012 Gold and R2 allows remote attackers to execute arbitrary code via crafted packets, aka "Windows Telnet Service Buffer Overflow Vulnerability."
CVE-2014-8329	Schrack Technik microControl with firmware before 1.7.0 (937) stores sensitive information under the web root with insufficient access control, which allows remote attackers to obtain access data for the ftp and telnet services via a direct request for ZTPUsrDtls.txt.
CVE-2014-8006	The Disaster Recovery (DRA) feature on the Cisco ISB8320-E High-Definition IP-Only DVR allows remote attackers to bypass authentication by establishing a TELNET session during a recovery boot, aka Bug ID CSCup85422.
CVE-2014-7279	The Konke Smart Plug K does not require authentication for TELNET sessions, which allows remote attackers to obtain "equipment management authority" via TCP traffic to port 23.
CVE-2014-6617	Softing FG-100 PB PROFIBUS firmware version FG-x00-PB_V2.02.0.00 contains a hardcoded password for the root account, which allows remote attackers to obtain administrative access via a TELNET session.
CVE-2014-5415	Beckhoff Embedded PC images before 2014-10-22 and Automation Device Specification (ADS) TwinCAT components might allow remote attackers to obtain access via the (1) Windows CE Remote Configuration Tool, (2) CE Remote Display service, or (3) TELNET service.
CVE-2014-5406	The Hospira LifeCare PCA Infusion System before 7.0 does not validate network traffic associated with sending a (1) drug library, (2) software update, or (3) configuration change, which allows remote attackers to modify settings or medication data via packets on the (a) TELNET, (b) HTTP, (c) HTTPS, or (d) UPNP port. NOTE: this issue might overlap CVE-2015-3459.
CVE-2014-3362	Memory leak in Cisco TelePresence System Edge MXP Series Software F9.3.3 and earlier allows remote attackers to cause a denial of service (management outage) via multiple TELNET connections, aka Bug ID CSCuo63677.
CVE-2014-3221	Huawei Eudemon8000E firewall with software V200R001C01SPC800 and earlier versions allows users to log in to the device using Telnet or SSH. When an attacker sends to the device a mass of TCP packets with special structure, the logging process becomes slow and users may be unable to log in to the device.
CVE-2014-3019	IBM BladeCenter SAS Connectivity Module (aka NSSM) and SAS RAID Module (aka RSSM) before 1.3.3.006 allow remote attackers to obtain blade and storage-pool access via a TELNET session.
CVE-2014-2350	Emerson DeltaV 10.3.1, 11.3, 11.3.1, and 12.3 uses hardcoded credentials for diagnostic services, which allows remote attackers to bypass intended access restrictions via a TCP session, as demonstrated by a session that uses the telnet program.
CVE-2014-2321	web_shell_cmd.gch on ZTE F460 and F660 cable modems allows remote attackers to obtain administrative access via sendcmd requests, as demonstrated by using "set TelnetCfg" commands to enable a TELNET service with specified credentials.
CVE-2014-0337	Cross-site scripting (XSS) vulnerability in the web interface on Huawei Echo Life HG8247 routers with software before V100R006C00SPC127 allows remote attackers to inject arbitrary web script or HTML via an invalid TELNET connection attempt with a crafted username that is not properly handled during construction of the "failed log-in attempts over telnet" log view.
CVE-2014-0329	The TELNET service on the ZTE ZXV10 W300 router 2.1.0 has a hardcoded password ending with airocon for the admin account, which allows remote attackers to obtain administrative access by leveraging knowledge of the MAC address characters present at the beginning of the password.
CVE-2013-7465	Ice Cold Apps Servers Ultimate 6.0.2(12) does not require authentication for TELNET, SSH, or FTP, which allows remote attackers to execute arbitrary code by uploading PHP scripts.
CVE-2013-7404	GE Healthcare Discovery NM 750b has a password of 2getin for the insite account for (1) Telnet and (2) FTP, which has unspecified impact and attack vectors. NOTE: it is not clear whether this password is default, hardcoded, or dependent on another system or product that requires a fixed value.
CVE-2013-6979	The VTY authentication implementation in Cisco IOS XE 03.02.xxSE and 03.03.xxSE incorrectly relies on the Linux-IOS internal-network configuration, which allows remote attackers to bypass authentication by leveraging access to a 192.168.x.2 source IP address, aka Bug ID CSCuj90227.
CVE-2013-6920	Siemens SINAMICS S/G controllers with firmware before 4.6.11 do not require authentication for FTP and TELNET sessions, which allows remote attackers to bypass intended access restrictions via TCP traffic to port (1) 21 or (2) 23.
CVE-2013-6707	Memory leak in the connection-manager implementation in Cisco Adaptive Security Appliance (ASA) Software 9.1(.3) and earlier allows remote attackers to cause a denial of service (multi-protocol management outage) by making multiple management session requests, aka Bug ID CSCug33233.
CVE-2013-6360	TRENDnet TS-S402 has a backdoor to enable TELNET.
CVE-2013-6013	Buffer overflow in the flow daemon (flowd) in Juniper Junos 10.4 before 10.4S14, 11.4 before 11.4R7-S2, 12.1.X44 before 12.1X44-D15, 12.1X45 before 12.1X45-D10 on SRX devices, when using telnet pass-through authentication on the firewall, might allow remote attackers to execute arbitrary code via a crafted telnet message.
CVE-2013-4652	Unspecified vulnerability in the command-line management interface on Siemens Scalance W7xx devices with firmware before 4.5.4 allows remote attackers to bypass authentication and execute arbitrary code via a (1) SSH or (2) TELNET connection.
CVE-2013-3613	Dahua DVR appliances do not properly restrict UPnP requests, which makes it easier for remote attackers to obtain access via vectors involving a replay attack against the TELNET port.
CVE-2013-3542	Grandstream GXV3501, GXV3504, GXV3601, GXV3601HD/LL, GXV3611HD/LL, GXV3615W/P, GXV3651FHD, GXV3662HD, GXV3615WP_HD, GXV3500, and possibly other camera models with firmware 1.0.4.11, have a hardcoded account "!#/" with the same password, which makes it easier for remote attackers to obtain access via a TELNET session.
CVE-2013-3367	Undocumented TELNET service in TRENDnet TEW-691GR and TEW-692GR when a web page named backdoor contains an HTML parameter of password and a value of j78G¬DFdg_24Mhw3.
CVE-2013-3366	Undocumented TELNET service in TRENDnet TEW-812DRU when a web page named backdoor contains an HTML parameter of password and a value of j78G¬DFdg_24Mhw3.
CVE-2013-2579	TP-Link IP Cameras TL-SC3130, TL-SC3130G, TL-SC3171, TL-SC3171G, and possibly other models before beta firmware LM.1.6.18P12_sign6 have an empty password for the hardcoded "qmik" account, which allows remote attackers to obtain administrative access via a TELNET session.
CVE-2013-2302	TransWARE Active! mail 6, when an external public interface is used, allows local users to obtain sensitive information belonging to arbitrary users by leveraging shell access, as demonstrated by a TELNET or SSH session to the server.
CVE-2013-1235	Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of terminated TELNET sessions, which allows remote attackers to cause a denial of service (TELNET outage) by making many TELNET connections and improperly ending these connections, aka Bug ID CSCug35507.
CVE-2013-1147	The Protocol Translation (PT) functionality in Cisco IOS 12.3 through 12.4 and 15.0 through 15.3, when one-step port-23 translation or a Telnet-to-PAD ruleset is configured, does not properly validate TCP connection information, which allows remote attackers to cause a denial of service (device reload) via an attempted connection to a PT resource, aka Bug ID CSCtz35999.
CVE-2013-0126	Multiple cross-site request forgery (CSRF) vulnerabilities in index.cgi on the Verizon FIOS Actiontec MI424WR-GEN3I router with firmware 40.19.36 allow remote attackers to hijack the authentication of administrators for requests that (1) add administrative accounts via the username and user_level parameters or (2) enable remote administration via the is_telnet_primary and is_telnet_secondary parameters.
CVE-2012-5966	The restricted telnet shell on the D-Link DSL2730U router allows remote authenticated users to bypass intended command restrictions via shell metacharacters that follow a whitelisted command.
CVE-2012-4879	The Linux Console on the WAGO I/O System 758 model 758-870, 758-874, 758-875, and 758-876 Industrial PC (IPC) devices has a default password of wago for the (1) root and (2) admin accounts, (3) a default password of user for the user account, and (4) a default password of guest for the guest account, which makes it easier for remote attackers to obtain login access via a TELNET session, a different vulnerability than CVE-2012-3013.
CVE-2012-4136	The high-availability service in the Fabric Interconnect component in Cisco Unified Computing System (UCS) does not properly bind the cluster service to the management interface, which allows remote attackers to obtain sensitive information or cause a denial of service (peer-syncing outage) via a TELNET connection, aka Bug ID CSCtz72910.
CVE-2012-2267	master.exe in the SNMP Master Agent in RealNetworks Helix Server and Helix Mobile Server 14.x before 14.3.x allows remote attackers to cause a denial of service (daemon crash) by establishing and closing a port-705 TCP connection, a different vulnerability than CVE-2012-1923.
CVE-2012-1989	telnet.rb in Puppet 2.7.x before 2.7.13 and Puppet Enterprise (PE) 1.2.x, 2.0.x, and 2.5.x before 2.5.1 allows local users to overwrite arbitrary files via a symlink attack on the NET::Telnet connection log (/tmp/out.log).
CVE-2012-1803	RuggedCom Rugged Operating System (ROS) 3.10.x and earlier has a factory account with a password derived from the MAC Address field in the banner, which makes it easier for remote attackers to obtain access by performing a calculation on this address value, and then establishing a (1) TELNET, (2) remote shell (aka rsh), or (3) serial-console session.
CVE-2012-1221	Directory traversal vulnerability in the telnet server in RabidHamster R2/Extreme 1.65 and earlier allows remote attackers to read arbitrary files via a .. (dot dot) in the File command.
CVE-2012-0339	Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement of access-class commands, which allows remote attackers to establish TELNET connections from arbitrary source IP addresses via a standard TELNET client, aka Bug ID CSCsi77774.
CVE-2011-4862	Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.2 and earlier, Heimdal 1.5.1 and earlier, GNU inetutils, and possibly other products allows remote attackers to execute arbitrary code via a long encryption key, as exploited in the wild in December 2011.
CVE-2011-4859	The Schneider Electric Quantum Ethernet Module, as used in the Quantum 140NOE771* and 140CPU65* modules, the Premium TSXETY* and TSXP57* modules, the M340 BMXNOE01* and BMXP3420* modules, and the STB DIO STBNIC2212 and STBNIP2* modules, uses hardcoded passwords for the (1) AUTCSE, (2) AUT_CSE, (3) fdrusers, (4) ftpuser, (5) loader, (6) nic2212, (7) nimrohs2212, (8) nip2212, (9) noe77111_v500, (10) ntpupdate, (11) pcfactory, (12) sysdiag, (13) target, (14) test, (15) USER, and (16) webserver accounts, which makes it easier for remote attackers to obtain access via the (a) TELNET, (b) Windriver Debug, or (c) FTP port.
CVE-2011-4514	The TELNET daemon in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime does not perform authentication, which makes it easier for remote attackers to obtain access via a TCP session.
CVE-2011-3322	Core Server HMI Service (Coreservice.exe) in Scadatec Limited Procyon SCADA 1.06, and other versions before 1.14, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long password to the Telnet (TCP/23) port, which triggers an out-of-bounds read or write, leading to a stack-based buffer overflow.
CVE-2011-1961	The telnet URI handler in Microsoft Internet Explorer 6 through 9 does not properly launch the handler application, which allows remote attackers to execute arbitrary programs via a crafted web site, aka "Telnet Handler Remote Code Execution Vulnerability."
CVE-2011-1623	Cisco Media Processing Software before 1.2 on Media Experience Engine (MXE) 5600 devices has a default root password, which makes it easier for context-dependent attackers to obtain access via (1) the local console, (2) an SSH session, or (3) a TELNET session, aka Bug ID CSCto77737.
CVE-2011-0885	A certain Comcast Business Gateway configuration of the SMC SMCD3G-CCR with firmware before 1.4.0.49.2 has a default password of D0nt4g3tme for the mso account, which makes it easier for remote attackers to obtain administrative access via the (1) web interface or (2) TELNET interface.
CVE-2010-4965	/etc/rc.d/rc.local on the D-Link DCS-2121 camera with firmware 1.04 configures a hardcoded password of admin for the root account, which makes it easier for remote attackers to obtain shell access by leveraging a running telnetd server.
CVE-2010-4675	Cisco Adaptive Security Appliances (ASA) 5500 series devices with software before 8.2(3) do not properly determine the interfaces for which TELNET connections should be permitted, which allows remote authenticated users to bypass intended access restrictions via vectors involving the "lowest security level interface," aka Bug ID CSCsv40504.
CVE-2010-4507	Multiple cross-site request forgery (CSRF) vulnerabilities on the iSpot 2.0.0.0 R1679, and the ClearSpot 2.0.0.0 R1512 and R1786, with firmware 1.9.9.4 allow remote attackers to hijack the authentication of administrators for requests that (1) execute arbitrary commands via the cmd parameter in an act_cmd_result action to webmain.cgi, (2) enable remote management via an enable_remote_access act_network_set action to webmain.cgi, (3) enable the TELNET service via an ENABLE_TELNET act_set_wimax_etc_config action to webmain.cgi, (4) enable TELNET sessions via a certain act_network_set action to webmain.cgi, or (5) read arbitrary files via the FILE_PATH parameter in an act_file_download action to upgrademain.cgi.
CVE-2010-4233	The Linux installation on the Camtron CMNC-200 Full HD IP Camera and TecVoz CMNC-200 Megapixel IP Camera with firmware 1.102A-008 has a default password of m for the root account, and a default password of merlin for the mg3500 account, which makes it easier for remote attackers to obtain access via the TELNET interface.
CVE-2010-4221	Multiple stack-based buffer overflows in the pr_netio_telnet_gets function in netio.c in ProFTPD before 1.3.3c allow remote attackers to execute arbitrary code via vectors involving a TELNET IAC escape character to a (1) FTP or (2) FTPS server.
CVE-2010-3972	Heap-based buffer overflow in the TELNET_STREAM_CONTEXT::OnSendData function in ftpsvc.dll in Microsoft FTP Service 7.0 and 7.5 for Internet Information Services (IIS) 7.0, and IIS 7.5, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a crafted FTP command, aka "IIS FTP Service Heap Buffer Overrun Vulnerability." NOTE: some of these details are obtained from third party information.
CVE-2010-3867	Multiple directory traversal vulnerabilities in the mod_site_misc module in ProFTPD before 1.3.3c allow remote authenticated users to create directories, delete directories, create symlinks, and modify file timestamps via directory traversal sequences in a (1) SITE MKDIR, (2) SITE RMDIR, (3) SITE SYMLINK, or (4) SITE UTIME command.
CVE-2010-2967	The loginDefaultEncrypt algorithm in loginLib in Wind River VxWorks before 6.9 does not properly support a large set of distinct possible passwords, which makes it easier for remote attackers to obtain access via a (1) telnet, (2) rlogin, or (3) FTP session.
CVE-2010-2966	The INCLUDE_SECURITY functionality in Wind River VxWorks 6.x, 5.x, and earlier uses the LOGIN_USER_NAME and LOGIN_USER_PASSWORD (aka LOGIN_PASSWORD) parameters to create hardcoded credentials, which makes it easier for remote attackers to obtain access via a (1) telnet, (2) rlogin, or (3) FTP session.
CVE-2010-2821	Unspecified vulnerability on the Cisco Firewall Services Module (FWSM) with software 3.2 before 3.2(17.2), 4.0 before 4.0(11.1), and 4.1 before 4.1(1.2) for Catalyst 6500 series switches and 7600 series routers, when multi-mode is enabled, allows remote attackers to cause a denial of service (device reload) via crafted (1) Telnet, (2) SSH, or (3) ASDM traffic over TCP, aka Bug ID CSCtg68694.
CVE-2010-2347	The Telnet interface in the SAP J2EE Engine Core (SAP-JEECOR) 6.40 through 7.02, and Server Core (SERVERCORE) 7.10 through 7.30 allows remote authenticated users to bypass a security check and conduct SMB relay attacks via unspecified vectors.
CVE-2009-2271	The Huawei D100 has (1) a certain default administrator password for the web interface, and does not force a password change; and has (2) a default password of admin for the admin account in the telnet interface; which makes it easier for remote attackers to obtain access.
CVE-2009-1930	The Telnet service in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2 allows remote Telnet servers to execute arbitrary code on a client machine by replaying the NTLM credentials of a client user, aka "Telnet Credential Reflection Vulnerability," a related issue to CVE-2000-0834.
CVE-2009-1717	Integer overflow in Terminal in Apple Mac OS X 10.5 before 10.5.7 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted size value in a CSI[4 xterm resize escape sequence that triggers a heap-based buffer overflow.
CVE-2009-0641	sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment variables with a method that was valid only in older FreeBSD distributions, which might allow remote attackers to execute arbitrary code by passing a crafted environment variable from a telnet client, as demonstrated by an LD_PRELOAD value that references a malicious library.
CVE-2009-0158	Stack-based buffer overflow in telnet in Apple Mac OS X 10.4.11 and 10.5 before 10.5.7 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a long hostname for a telnet server.
CVE-2008-6096	Cross-site scripting (XSS) vulnerability in Juniper NetScreen ScreenOS before 5.4r10, 6.0r6, and 6.1r2 allows remote attackers to inject arbitrary web script or HTML via the user name parameter to the (1) web interface login page or the (2) telnet login page.
CVE-2008-1542	Airspan Base Station Distribution Unit (BSDU) has "topsecret" as its password for the root account, which allows remote attackers to obtain administrative access via a telnet login, a different vulnerability than CVE-2008-1262.
CVE-2008-0529	Buffer overflow in the telnet server in Cisco Unified IP Phone 7906G, 7911G, 7941G, 7961G, 7970G, and 7971G running SCCP firmware might allow remote authenticated users to execute arbitrary code via a crafted command.
CVE-2008-0229	The telnet service in LevelOne WBR-3460 4-Port ADSL 2/2+ Wireless Modem Router with firmware 1.00.11 and 1.00.12 does not require authentication, which allows remote attackers on the local or wireless network to obtain administrative access.
CVE-2008-0153	telnetd.exe in Pragma TelnetServer 7.0.4.589 allows remote attackers to cause a denial of service (process crash and resource exhaustion) via a crafted TELOPT PRAGMA LOGON telnet option, which triggers a NULL pointer dereference.
CVE-2008-0152	SLnet.exe in SeattleLab SLNet RF Telnet Server 4.1.1.3758 and earlier allows user-assisted remote attackers to cause a denial of service (crash) via unspecified telnet options, which triggers a NULL pointer dereference. NOTE: the crash is not user-assisted when the server is running in debug mode.
CVE-2008-0151	Heap-based buffer overflow in Foxit WAC Server 2.1.0.910, 2.0 Build 3503, and earlier allows remote attackers to cause a denial of service (crash) and execute arbitrary code via a Telnet request with long options.
CVE-2008-0132	Pragma FortressSSH 5.0 Build 4 Revision 293 and earlier handles long input to sshd.exe by creating an error-message window and waiting for the administrator to click in this window before terminating the sshd.exe process, which allows remote attackers to cause a denial of service (connection slot exhaustion) via a flood of SSH connections with long data objects, as demonstrated by (1) a long list of keys and (2) a long username.
CVE-2007-6360	Unspecified vulnerability in the Sun eXtended System Control Facility (XSCF) Control Package (XCP) firmware before 1050 on SPARC Enterprise M4000, M5000, M8000, and M9000 servers allows remote attackers to cause a denial of service (reboot) via (1) telnet, (2) ssh, or (3) http network traffic that triggers memory exhaustion.
CVE-2007-5381	Stack-based buffer overflow in the Line Printer Daemon (LPD) in Cisco IOS before 12.2(18)SXF11, 12.4(16a), and 12.4(2)T6 allow remote attackers to execute arbitrary code by setting a long hostname on the target system, then causing an error message to be printed, as demonstrated by a telnet session to the LPD from a source port other than 515.
CVE-2007-4747	The telnet service in Cisco Video Surveillance IP Gateway Encoder/Decoder (Standalone and Module) firmware 1.8.1 and earlier, Video Surveillance SP/ISP Decoder Software firmware 1.11.0 and earlier, and the Video Surveillance SP/ISP firmware 1.23.7 and earlier does not require authentication, which allows remote attackers to perform administrative actions, aka CSCsj31729.
CVE-2007-4430	Unspecified vulnerability in Cisco IOS 12.0 through 12.4 allows context-dependent attackers to cause a denial of service (device restart and BGP routing table rebuild) via certain regular expressions in a "show ip bgp regexp" command. NOTE: unauthenticated remote attacks are possible in environments with anonymous telnet and Looking Glass access.
CVE-2007-4042	Multiple argument injection vulnerabilities in Netscape Navigator 9 allow remote attackers to execute arbitrary commands via a NULL byte (%00) and shell metacharacters in a (1) mailto, (2) nntp, (3) news, (4) snews, or (5) telnet URI, a similar issue to CVE-2007-3670.
CVE-2007-4041	Multiple argument injection vulnerabilities in Mozilla Firefox 2.0.0.5 and 3.0alpha allow remote attackers to execute arbitrary commands via a NULL byte (%00) and shell metacharacters in a (1) mailto, (2) nntp, (3) news, (4) snews, or (5) telnet URI, a similar issue to CVE-2007-3670.
CVE-2007-3232	The IBM TotalStorage DS400 with firmware 4.15 uses a blank password for the (1) root, (2) user, (3) manager, (4) administrator, and (5) operator accounts, which allows remote attackers to gain login access via certain Linux daemons, including a telnet daemon on a nonstandard port, tcp/6000.
CVE-2007-0956	The telnet daemon (telnetd) in MIT krb5 before 1.6.1 allows remote attackers to bypass authentication and gain system access via a username beginning with a '-' character, a similar issue to CVE-2007-0882.
CVE-2007-0882	Argument injection vulnerability in the telnet daemon (in.telnetd) in Solaris 10 and 11 (SunOS 5.10 and 5.11) misinterprets certain client "-f" sequences as valid requests for the login program to skip authentication, which allows remote attackers to log into certain accounts, as demonstrated by the bin account.
CVE-2006-6597	Argument injection vulnerability in HyperAccess 8.4 allows user-assisted remote attackers to execute arbitrary vbscript and commands via the /r option in a telnet:// URI, which is configured to use hawin32.exe.
CVE-2006-6241	Sorin Chitu Telnet-FTP Server 1.0 allows remote authenticated users to cause a denial of service (crash) via consecutive RETR commands. NOTE: The provenance of this information is unknown; the details are obtained solely from third party information.
CVE-2006-6240	Directory traversal vulnerability in Sorin Chitu Telnet-FTP Server 1.0 allows remote authenticated users to list contents of arbitrary directories and download arbitrary files via a .. (dot dot) sequence in an FTP command argument, as demonstrated by RETR (GET) or STOR (PUT). NOTE: The provenance of this information is unknown; the details are obtained solely from third party information.
CVE-2006-5038	The FiWin SS28S WiFi VoIP SIP/Skype Phone, firmware version 01_02_07, has a hard-coded username and password, which allows remote attackers to gain administrative access via telnet.
CVE-2006-4832	Buffer overflow in the telnet service in Verso NetPerformer FRAD ACT SDM-95xx 7.xx (R1) and earlier, SDM-93xx 10.x.x (R2) and earlier, and SDM-92xx 9.x.x (R1) and earlier allows remote attackers to cause a denial of service (reboot) and possibly execute arbitrary code via a long username.
CVE-2006-2276	bgpd in Quagga 0.98 and 0.99 before 20060504 allows local users to cause a denial of service (CPU consumption) via a certain sh ip bgp command entered in the telnet interface.
CVE-2006-1936	Buffer overflow in Ethereal 0.8.5 up to 0.10.14 allows remote attackers to execute arbitrary code via the telnet dissector.
CVE-2006-0789	Certain unspecified Kyocera printers have a default "admin" account with a blank password, which allows remote attackers to access an administrative menu via a telnet session.
CVE-2006-0677	telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated attackers to cause a denial of service (server crash) via unknown vectors that trigger a null dereference.
CVE-2005-3717	The telnet daemon in UTStarcom F1000 VOIP WIFI Phone s2.0 running VxWorks 5.5.1 with kernel WIND 2.6 has a default username "target" and password "password", which allows remote attackers to gain full access to the system.
CVE-2005-3654	Blue Coat Systems Inc. WinProxy before 6.1a allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large number of packets with 0xFF characters to the Telnet port (TCP 23), which corrupts the heap.
CVE-2005-2841	Buffer overflow in Firewall Authentication Proxy for FTP and/or Telnet Sessions for Cisco IOS 12.2ZH and 12.2ZL, 12.3 and 12.3T, and 12.4 and 12.4T allows remote attackers to cause a denial of service and possibly execute arbitrary code via crafted user authentication credentials.
CVE-2005-2424	The management interface for Siemens SANTIS 50 running firmware 4.2.8.0, and possibly other products including Ericsson HN294dp and Dynalink RTA300W, allows remote attackers to access the Telnet port without authentication via certain packets to the web interface that cause the interface to freeze.
CVE-2005-2374	Belkin 54g wireless routers do not properly set an administrative password, which allows remote attackers to gain access via the (1) Telnet or (2) web administration interfaces.
CVE-2005-2361	Unknown vulnerability in the (1) AgentX dissector, (2) PER dissector, (3) DOCSIS dissector, (4) SCTP graphs, (5) HTTP dissector, (6) DCERPC, (7) DHCP, (8) RADIUS dissector, (9) Telnet dissector, (10) IS-IS LSP dissector, or (11) NCP dissector in Ethereal 0.8.19 through 0.10.11 allows remote attackers to cause a denial of service (application crash or abort) via unknown attack vectors.
CVE-2005-2279	Cisco ONS 15216 Optical Add/Drop Multiplexer (OADM) running firmware 2.2.2 and earlier allows remote attackers to cause a denial of service (management plane session loss) via crafted telnet data.
CVE-2005-2040	Multiple buffer overflows in the getterminaltype function in telnetd for Heimdal before 0.6.5 may allow remote attackers to execute arbitrary code, a different vulnerability than CVE-2005-0468 and CVE-2005-0469.
CVE-2005-1771	Unknown vulnerability in HP-UX trusted systems B.11.00 through B.11.23 allows remote attackers to gain unauthorized access, possibly involving remshd and/or telnet -t.
CVE-2005-1566	Acrowave AAP-3100AR wireless router allows remote attackers to bypass authentication by pressing CTRL-C at the username or password prompt in a telnet session, which causes the shell to crash and restart, then leave the user in the new shell.
CVE-2005-1456	Multiple unknown vulnerabilities in the (1) DHCP and (2) Telnet dissectors in Ethereal before 0.10.11 allow remote attackers to cause a denial of service (abort).
CVE-2005-1205	The Telnet client for Microsoft Windows XP, Windows Server 2003, and Windows Services for UNIX allows remote attackers to read sensitive environment variables via the NEW-ENVIRON option with a SEND ENV_USERVAR command.
CVE-2005-0957	Bay Technical Associates RPC-3 Telnet Host 3.05 allows remote attackers to bypass authentication by pressing the escape and enter keys at the username prompt.
CVE-2005-0868	AS/400 Telnet 5250 terminal emulation clients, as implemented by (1) IBM client access, (2) Bosanova, (3) PowerTerm, (4) Mochasoft, and possibly other emulations, allows malicious AS/400 servers to execute arbitrary commands via a STRPCO (Start PC Organizer) command followed by STRPCCMD (Start PC command), as demonstrated by creating a backdoor account using REXEC.
CVE-2005-0865	Samsung ADSL Modem SMDK8947v1.2 uses default passwords for the (1) root, (2) admin, or (3) user users, which allows remote attackers to gain privileges via Telnet or an HTTP request to adsl.cgi.
CVE-2005-0768	Buffer overflow in the administration web server for GoodTech Telnet Server 4.0 and 5.0, and possibly all versions before 5.0.7, allows remote attackers to execute arbitrary code via a long string to port 2380.
CVE-2005-0488	Certain BSD-based Telnet clients, including those used on Solaris and SuSE Linux, allow remote malicious Telnet servers to read sensitive environment variables via the NEW-ENVIRON option with a SEND ENV_USERVAR command.
CVE-2005-0469	Buffer overflow in the slc_add_reply function in various BSD-based Telnet clients, when handling LINEMODE suboptions, allows remote attackers to execute arbitrary code via a reply with a large number of Set Local Character (SLC) commands.
CVE-2005-0468	Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet clients allows remote attackers to execute arbitrary code via responses that contain a large number of characters that require escaping, which consumers more memory than allocated.
CVE-2004-2685	Buffer overflow in YoungZSoft CCProxy 6.2 and earlier allows remote attackers to execute arbitrary code via a long address in a ping (p) command to the Telnet proxy service, a different vector than CVE-2004-2416.
CVE-2004-2549	Nortel Wireless LAN (WLAN) Access Point (AP) 2220, 2221, and 2225 allow remote attackers to cause a denial of service (service crash) via a TCP request with a large string, followed by 8 newline characters, to (1) the Telnet service on TCP port 23 and (2) the HTTP service on TCP port 80, possibly due to a buffer overflow.
CVE-2004-2314	The Telnet listener for Novell iChain Server before 2.2 Field Patch 3b 2.2.116 does not have a password by default, which allows remote attackers to gain access.
CVE-2004-1541	SecureCRT 4.0, 4.1, and possibly other versions, allows remote attackers to execute arbitrary commands via a telnet:// URL that uses the /F option to specify a configuration file on a samba share.
CVE-2004-1502	The Telnet proxy in 602 Lan Suite 2004.0.04.0909 and earlier allows remote attackers to cause a denial of service (socket exhaustion) via a Telnet request to an IP address of the proxy's network interface, which causes a loop.
CVE-2004-1464	Cisco IOS 12.2(15) and earlier allows remote attackers to cause a denial of service (refused VTY (virtual terminal) connections), via a crafted TCP connection to the Telnet or reverse Telnet port.
CVE-2004-0998	Format string vulnerability in telnetd-ssl 0.17 and earlier allows remote attackers to execute arbitrary code.
CVE-2004-0911	telnetd for netkit 0.17 and earlier, and possibly other versions, on Debian GNU/Linux allows remote attackers to cause a denial of service (free of an invalid pointer), a different vulnerability than CVE-2001-0554.
CVE-2004-0640	Format string vulnerability in the SSL_set_verify function in telnetd.c for SSLtelnet daemon (SSLtelnetd) 0.13 allows remote attackers to execute arbitrary code.
CVE-2004-0568	HyperTerminal application for Windows NT 4.0, Windows 2000, Windows XP, and Windows Server 2003 does not properly validate the length of a value that is saved in a session file, which allows remote attackers to execute arbitrary code via a malicious HyperTerminal session file (.ht), web site, or Telnet URL contained in an e-mail message, triggering a buffer overflow.
CVE-2004-0551	Cisco CatOS 5.x before 5.5(20) through 8.x before 8.2(2) and 8.3(2)GLX, as used in Catalyst switches, allows remote attackers to cause a denial of service (system crash and reload) by sending invalid packets instead of the final ACK portion of the three-way handshake to the (1) Telnet, (2) HTTP, or (3) SSH services, aka "TCP-ACK DoS attack."
CVE-2004-0476	Buffer overflow in 3Com OfficeConnect Remote 812 ADSL Router 1.1.9.4 allows remote attackers to cause a denial of service (reboot or packet loss) via a long string containing Telnet escape characters to the Telnet port.
CVE-2004-0473	Argument injection vulnerability in Opera before 7.50 does not properly filter "-" characters that begin a hostname in a telnet URI, which allows remote attackers to insert options to the resulting command line and overwrite arbitrary files via (1) the "-f" option on Windows XP or (2) the "-n" option on Linux.
CVE-2004-0411	The URI handlers in Konqueror for KDE 3.2.2 and earlier do not properly filter "-" characters that begin a hostname in a (1) telnet, (2) rlogin, (3) ssh, or (4) mailto URI, which allows remote attackers to manipulate the options that are passed to the associated programs, possibly to read arbitrary files or execute arbitrary code.
CVE-2004-0308	Unknown vulnerability in Cisco ONS 15327 before 4.1(3), ONS 15454 before 4.6(1), ONS 15454 SD before 4.1(3), and Cisco ONS15600 before 1.3(0) allows a superuser whose account is locked out, disabled, or suspended to gain unauthorized access via a Telnet connection to the VxWorks shell.
CVE-2004-0268	Multiple buffer overflows in EvolutionX 3921 and 3935 allow remote attackers to cause a denial of service (hang) via (1) a long cd command to the FTP server, or (2) a long dir command to the telnet server.
CVE-2003-1090	Buffer overflow in AbsoluteTelnet before 2.12 RC10 allows remote attackers to execute arbitrary code via a long window title.
CVE-2003-1069	The Telnet daemon (in.telnetd) for Solaris 2.6 through 9 allows remote attackers to cause a denial of service (CPU consumption by infinite loop).
CVE-2003-0795	The vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is taking place when processing the SE marker, which allows remote attackers to cause a denial of service (crash) via a malformed telnet command to the telnet CLI port, which may trigger a null dereference.
CVE-2002-2373	The default configuration of the TCP/IP printer configuration utility in Apple LaserWriter 12/640 PS printer contains a blank Telnet password, which allows remote attackers to gain access.
CVE-2002-2372	The telnet server in Infoprint 21 running controller software before 1.056007 allows remote attackers to cause a denial of service (crash) via a long username, possibly due to a buffer overflow.
CVE-2002-2174	The Telnet proxy of 602Pro LAN SUITE 2002 does not restrict the number of outstanding connections to the local host, which allows remote attackers to create a denial of service (memory consumption) via a large number of connections.
CVE-2002-2071	Compaq Tru64 4.0 d allows remote attackers to cause a denial of service in (1) telnet, (2) FTP, (3) ypbind, (4) rpc.lockd, (5) snmp, (6) ttdbserverd, and possibly other services via a TCP SYN scan, as demonstrated using nmap.
CVE-2002-1898	Terminal 1.3 in Apple Mac OS X 10.2 allows remote attackers to execute arbitrary commands via shell metacharacters in a telnet:// link, which is executed by Terminal.app window.
CVE-2002-1629	Multi-Tech ProxyServer products MTPSR1-100, MTPSR1-120, MTPSR1-202ST, MTPSR2-201, and MTPSR3-200 ship with a null password, which allows remote attackers to gain administrative privileges via Telnet or HTTP.
CVE-2002-1558	Cisco ONS15454 and ONS15327 running ONS before 3.4 have an account for the VxWorks Operating System in the TCC, TCC+ and XTC that cannot be changed or disabled, which allows remote attackers to gain privileges by connecting to the account via Telnet.
CVE-2002-1282	Unknown vulnerability in the telnet KIO subsystem (telnet.protocol) of KDE 2.x 2.1 and later allows local and remote attackers to execute arbitrary code via a certain URL.
CVE-2002-1272	Alcatel OmniSwitch 7700/7800 switches running AOS 5.1.1 contains a back door telnet server that was intended for development but not removed before distribution, which allows remote attackers to gain administrative privileges.
CVE-2002-1071	ZyXEL Prestige 642R allows remote attackers to cause a denial of service in the Telnet, FTP, and DHCP services (crash) via a TCP packet with both the SYN and ACK flags set.
CVE-2002-1048	HP JetDirect printers allow remote attackers to obtain the administrative password for the (1) web and (2) telnet services via an SNMP request to the variable (.iso.3.6.1.4.1.11.2.3.9.4.2.1.3.9.1.1.0.
CVE-2002-0886	Cisco DSL CPE devices running CBOS 2.4.4 and earlier allows remote attackers to cause a denial of service (hang or memory consumption) via (1) a large packet to the DHCP port, (2) a large packet to the Telnet port, or (3) a flood of large packets to the CPE, which causes the TCP/IP stack to consume large amounts of memory.
CVE-2002-0883	Vulnerability in Compaq ProLiant BL e-Class Integrated Administrator 1.0 and 1.10, allows authenticated users with Telnet, SSH, or console access to conduct unauthorized activities.
CVE-2002-0630	The Telnet service for Polycom ViewStation before 7.2.4 allows remote attackers to cause a denial of service (crash) via long or malformed ICMP packets.
CVE-2002-0629	The Telnet service for Polycom ViewStation before 7.2.4 allows remote attackers to cause a denial of service (crash) via multiple connections to the server.
CVE-2002-0628	The Telnet service for Polycom ViewStation before 7.2.4 does not restrict the number of failed login attempts, which makes it easier for remote attackers to guess usernames and passwords via a brute force attack.
CVE-2002-0545	Cisco Aironet before 11.21 with Telnet enabled allows remote attackers to cause a denial of service (reboot) via a series of login attempts with invalid usernames and passwords.
CVE-2002-0496	The HTTP server for SouthWest Talker server 1.0.0 allows remote attackers to cause a denial of service (server crash) via a malformed URL to port 5002.
CVE-2002-0350	HP Procurve Switch 4000M running firmware C.08.22 and C.09.09 allows remote attackers to cause a denial of service via a port scan of the management IP address, which disables the telnet service.
CVE-2002-0256	The telnet port in Arescom NetDSL 1000 router allows remote attackers to cause a denial of service via a series of connections with long strings, which causes a large number of login failures and causes the telnet service to stop.
CVE-2002-0134	Telnet proxy in Avirt Gateway Suite 4.2 does not require authentication for connecting to the proxy system itself, which allows remote attackers to list file contents of the proxy and execute arbitrary commands via a "dos" command.
CVE-2002-0133	Buffer overflows in Avirt Gateway Suite 4.2 allow remote attackers to cause a denial of service and possibly execute arbitrary code via (1) long header fields to the HTTP proxy, or (2) a long string to the telnet proxy.
CVE-2002-0020	Buffer overflow in telnet server in Windows 2000 and Interix 2.2 allows remote attackers to execute arbitrary code via malformed protocol options.
CVE-2001-1444	The Kerberos Telnet protocol, as implemented by KTH Kerberos IV and Kerberos V (Heimdal), does not encrypt authentication and encryption options sent from the server, which allows remote attackers to downgrade authentication and encryption mechanisms via a man-in-the-middle attack.
CVE-2001-1443	KTH Kerberos IV and Kerberos V (Heimdal) for Telnet clients do not encrypt connections if the server does not support the requested encryption, which allows remote attackers to read communications via a man-in-the-middle attack.
CVE-2001-1428	The (1) FTP and (2) Telnet services in Beck GmbH IPC@Chip are shipped with a default password, which allows remote attackers to gain unauthorized access.
CVE-2001-1340	Beck GmbH IPC@Chip TelnetD service supports only one connection and does not disconnect a user who does not complete the login process, which allows remote attackers to lock out the administrator account by connecting to the service.
CVE-2001-1339	Beck IPC GmbH IPC@CHIP telnet service does not delay or disconnect users from the service when bad passwords are entered, which makes it easier for remote attackers to conduct brute force password guessing attacks.
CVE-2001-1338	Beck IPC GmbH IPC@CHIP TelnetD server generates different responses when given valid and invalid login names, which allows remote attackers to determine accounts on the system.
CVE-2001-1292	Sambar Telnet Proxy/Server allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long password.
CVE-2001-1291	The telnet server for 3Com hardware such as PS40 SuperStack II does not delay or disconnect remote attackers who provide an incorrect username or password, which makes it easier to break into the server via brute force password guessing.
CVE-2001-1135	ZyXEL Prestige 642R and 642R-I routers do not filter the routers' Telnet and FTP ports on the external WAN interface from inside access, allowing someone on an internal computer to reconfigure the router, if the password is known.
CVE-2001-1064	Cisco 600 series routers running CBOS 2.0.1 through 2.4.2ap allows remote attackers to cause a denial of service via multiple connections to the router on the (1) HTTP or (2) telnet service, which causes the router to become unresponsive and stop forwarding packets.
CVE-2001-1039	The JetAdmin web interface for HP JetDirect does not set a password for the telnet interface when the admin password is changed, which allows remote attackers to gain access to the printer.
CVE-2001-0994	Marconi ForeThought 7.1 allows remote attackers to cause a denial of service by causing both telnet sessions to be locked via unusual input (e.g., from a port scanner), which prevents others from logging into the device.
CVE-2001-0797	Buffer overflow in login in various System V based operating systems allows remote attackers to execute arbitrary commands via a large number of arguments through services such as telnet and rlogin.
CVE-2001-0757	Cisco 6400 Access Concentrator Node Route Processor 2 (NRP2) 12.1DC card does not properly disable access when a password has not been set for vtys, which allows remote attackers to obtain access via telnet.
CVE-2001-0667	Internet Explorer 6 and earlier, when used with the Telnet client in Services for Unix (SFU) 2.0, allows remote attackers to execute commands by spawning Telnet with a log file option on the command line and writing arbitrary code into an executable file which is later executed, aka a new variant of the Telnet Invocation vulnerability as described in CVE-2001-0150.
CVE-2001-0564	APC Web/SNMP Management Card prior to Firmware 310 only supports one telnet connection, which allows a remote attacker to create a denial of service via repeated failed logon attempts which temporarily locks the card.
CVE-2001-0554	Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows remote attackers to execute arbitrary commands via a set of options including AYT (Are You There), which is not properly handled by the telrcv function.
CVE-2001-0505	Multiple memory leaks in Microsoft Services for Unix 2.0 allow remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed requests to (1) the Telnet service, or (2) the NFS service.
CVE-2001-0444	Cisco CBOS 2.3.0.053 sends output of the "sh nat" (aka "show nat") command to the terminal of the next user who attempts to connect to the router via telnet, which could allow that user to obtain sensitive information.
CVE-2001-0427	Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via a flood of invalid login requests to (1) the SSL service, or (2) the telnet service, which do not properly disconnect the user after several failed login attempts.
CVE-2001-0396	The pre-login mode in the System Administrator interface of Lightwave ConsoleServer 3200 allows remote attackers to obtain sensitive information such as system status, configuration, and users.
CVE-2001-0395	Lightwave ConsoleServer 3200 does not disconnect users after unsuccessful login attempts, which could allow remote attackers to conduct brute force password guessing.
CVE-2001-0351	Microsoft Windows 2000 telnet service allows a local user to make a certain system call that allows the user to terminate a Telnet session and cause a denial of service.
CVE-2001-0350	Microsoft Windows 2000 telnet service creates named pipes with predictable names and does not properly verify them, which allows local users to execute arbitrary commands by creating a named pipe with the predictable name and associating a malicious program with it, the second of two variants of this vulnerability.
CVE-2001-0349	Microsoft Windows 2000 telnet service creates named pipes with predictable names and does not properly verify them, which allows local users to execute arbitrary commands by creating a named pipe with the predictable name and associating a malicious program with it, the first of two variants of this vulnerability.
CVE-2001-0348	Microsoft Windows 2000 telnet service allows attackers to cause a denial of service (crash) via a long logon command that contains a backspace.
CVE-2001-0347	Information disclosure vulnerability in Microsoft Windows 2000 telnet service allows remote attackers to determine the existence of user accounts such as Guest, or log in to the server without specifying the domain name, via a malformed userid.
CVE-2001-0346	Handle leak in Microsoft Windows 2000 telnet service allows attackers to cause a denial of service by starting a large number of sessions and terminating them.
CVE-2001-0345	Microsoft Windows 2000 telnet service allows attackers to prevent idle Telnet sessions from timing out, causing a denial of service by creating a large number of idle sessions.
CVE-2001-0270	Marconi ASX-1000 ASX switches allow remote attackers to cause a denial of service in the telnet and web management interfaces via a malformed packet with the SYN-FIN and More Fragments attributes set.
CVE-2001-0185	Netopia R9100 router version 4.6 allows authenticated users to cause a denial of service by using the router's telnet program to connect to the router's IP address, which causes a crash.
CVE-2001-0150	Internet Explorer 5.5 and earlier executes Telnet sessions using command line arguments that are specified by the web site, which could allow remote attackers to execute arbitrary commands if the IE client is using the Telnet client provided in Services for Unix (SFU) 2.0, which creates session transcripts.
CVE-2001-0094	Buffer overflow in kdc_reply_cipher of libkrb (Kerberos 4 authentication library) in NetBSD 1.5 and FreeBSD 4.2 and earlier, as used in Kerberised applications such as telnetd and login, allows local users to gain root privileges.
CVE-2001-0093	Vulnerability in telnetd in FreeBSD 1.5 allows local users to gain root privileges by modifying critical environmental variables that affect the behavior of telnetd.
CVE-2001-0041	Memory leak in Cisco Catalyst 4000, 5000, and 6000 series switches allows remote attackers to cause a denial of service via a series of failed telnet authentication attempts.
CVE-2000-1195	telnet daemon (telnetd) from the Linux netkit package before netkit-telnet-0.16 allows remote attackers to bypass authentication when telnetd is running with the -L command line option.
CVE-2000-1185	The telnet proxy in RideWay PN proxy server allows remote attackers to cause a denial of service via a flood of connections that contain malformed requests.
CVE-2000-1184	telnetd in FreeBSD 4.2 and earlier, and possibly other operating systems, allows remote attackers to cause a denial of service by specifying an arbitrary large file in the TERMCAP environmental variable, which consumes resources as the server processes the file.
CVE-2000-1111	Telnet Service for Windows 2000 Professional does not properly terminate incomplete connection attempts, which allows remote attackers to cause a denial of service by connecting to the server and not providing any input.
CVE-2000-1063	Buffer overflow in the Telnet service in HP JetDirect printer card Firmware x.08.20 and earlier allows remote attackers to cause a denial of service.
CVE-2000-0991	Buffer overflow in Hilgraeve, Inc. HyperTerminal client on Windows 98, ME, and 2000 allows remote attackers to execute arbitrary commands via a long telnet URL, aka the "HyperTerminal Buffer Overflow" vulnerability.
CVE-2000-0892	Some telnet clients allow remote telnet servers to request environment variables from the client that may contain sensitive information, or remote web servers to obtain the information via a telnet: URL.
CVE-2000-0834	The Windows 2000 telnet client attempts to perform NTLM authentication by default, which allows remote attackers to capture and replay the NTLM challenge/response via a telnet:// URL that points to the malicious server, aka the "Windows 2000 Telnet Client NTLM Authentication" vulnerability.
CVE-2000-0733	Telnetd telnet server in IRIX 5.2 through 6.1 does not properly cleans user-injected format strings, which allows remote attackers to execute arbitrary commands via a long RLD variable in the IAC-SB-TELOPT_ENVIRON request.
CVE-2000-0665	GAMSoft TelSrv telnet server 1.5 and earlier allows remote attackers to cause a denial of service via a long username.
CVE-2000-0598	Fortech Proxy+ allows remote attackers to bypass access restrictions for to the administration service by redirecting their connections through the telnet proxy.
CVE-2000-0581	Windows 2000 Telnet Server allows remote attackers to cause a denial of service by sending a continuous stream of binary zeros, which causes the server to crash.
CVE-2000-0480	Dragon telnet server allows remote attackers to cause a denial of service via a long username.
CVE-2000-0268	Cisco IOS 11.x and 12.x allows remote attackers to cause a denial of service by sending the ENVIRON option to the Telnet daemon before it is ready to accept it, which causes the system to reboot.
CVE-2000-0212	InterAccess TelnetD Server 4.0 allows remote attackers to conduct a denial of service via malformed terminal client configuration information.
CVE-2000-0166	Buffer overflow in the InterAccess telnet server TelnetD allows remote attackers to execute commands via a long login name.
CVE-2000-0152	Remote attackers can cause a denial of service in Novell BorderManager 3.5 by pressing the enter key in a telnet connection to port 2000.
CVE-2000-0113	The SyGate Remote Management program does not properly restrict access to its administration service, which allows remote attackers to cause a denial of service, or access network traffic statistics.
CVE-1999-1336	3Com HiPer Access Router Card (HiperARC) 4.0 through 4.2.29 allows remote attackers to cause a denial of service (reboot) via a flood of IAC packets to the telnet port.
CVE-1999-1264	WebRamp M3 router does not disable remote telnet or HTTP access to itself, even when access has been explicitly disabled.
CVE-1999-1213	Vulnerability in telnet service in HP-UX 10.30 allows attackers to cause a denial of service.
CVE-1999-1211	Vulnerability in in.telnetd in SunOS 4.1.1 and earlier allows local users to gain root privileges.
CVE-1999-1202	StarTech (1) POP3 proxy server and (2) telnet server allows remote attackers to cause a denial of service via a long USER command.
CVE-1999-1098	Vulnerability in BSD Telnet client with encryption and Kerberos 4 authentication allows remote attackers to decrypt the session via sniffing.
CVE-1999-1090	The default configuration of NCSA Telnet package for Macintosh and PC enables FTP, even though it does not include an "ftp=yes" line, which allows remote attackers to read and modify arbitrary files.
CVE-1999-1032	Vulnerability in LAT/Telnet Gateway (lattelnet) on Ultrix 4.1 and 4.2 allows attackers to gain root privileges.
CVE-1999-0991	Buffer overflow in GoodTech Telnet Server NT allows remote users to cause a denial of service via a long login name.
CVE-1999-0919	A memory leak in a Motorola CableRouter allows remote attackers to conduct a denial of service via a large number of telnet connections.
CVE-1999-0889	Cisco 675 routers running CBOS allow remote attackers to establish telnet sessions if an exec or superuser password has not been set.
CVE-1999-0843	Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.
CVE-1999-0817	Lynx WWW client allows a remote attacker to specify command-line parameters which Lynx uses when calling external programs to handle certain protocols, e.g. telnet.
CVE-1999-0749	Buffer overflow in Microsoft Telnet client in Windows 95 and Windows 98 via a malformed Telnet argument.
CVE-1999-0740	Remote attackers can cause a denial of service on Linux in.telnetd telnet daemon through a malformed TERM environmental variable.
CVE-1999-0619	REJECT DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: None. Reason: this candidate is solely about a configuration that does not directly introduce security vulnerabilities, so it is more appropriate to cover under the Common Configuration Enumeration (CCE). Notes: the former description is: "The Telnet service is running."
CVE-1999-0571	A router's configuration service or management interface (such as a web server or telnet) is configured to allow connections from arbitrary hosts.
CVE-1999-0416	Vulnerability in Cisco 7xx series routers allows a remote attacker to cause a system reload via a TCP connection to the router's TELNET port.
CVE-1999-0290	The WinGate telnet proxy allows remote attackers to cause a denial of service via a large number of connections to localhost.
CVE-1999-0285	Denial of service in telnet from the Windows NT Resource Kit, by opening then immediately closing a connection.
CVE-1999-0273	Denial of service through Solaris 2.5.1 telnet by sending ^D characters.
CVE-1999-0230	Buffer overflow in Cisco 7xx routers through the telnet service.
CVE-1999-0192	Buffer overflow in telnet daemon tgetent routing allows remote attackers to gain root access via the TERMCAP environmental variable.
CVE-1999-0087	Denial of service in AIX telnet can freeze a system and prevent users from accessing the server.
CVE-1999-0073	Telnet allows a remote client to specify environment variables including LD_LIBRARY_PATH, allowing an attacker to bypass the normal system libraries and gain root access.


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