CVE - CVE-2025-2817

CVE-ID
CVE-2025-2817	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Mozilla Firefox's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an attacker could bypass intended access controls, allowing SYSTEM-level file operations on paths controlled by a non-privileged user and enabling privilege escalation. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird ESR < 128.10.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://bugzilla.mozilla.org/show_bug.cgi?id=1917536 URL:https://bugzilla.mozilla.org/show_bug.cgi?id=1917536 MISC:https://www.mozilla.org/security/advisories/mfsa2025-28/ URL:https://www.mozilla.org/security/advisories/mfsa2025-28/ MISC:https://www.mozilla.org/security/advisories/mfsa2025-29/ URL:https://www.mozilla.org/security/advisories/mfsa2025-29/ MISC:https://www.mozilla.org/security/advisories/mfsa2025-30/ URL:https://www.mozilla.org/security/advisories/mfsa2025-30/ MISC:https://www.mozilla.org/security/advisories/mfsa2025-31/ URL:https://www.mozilla.org/security/advisories/mfsa2025-31/ MISC:https://www.mozilla.org/security/advisories/mfsa2025-32/ URL:https://www.mozilla.org/security/advisories/mfsa2025-32/
Assigning CNA
Mozilla Corporation
Date Record Created
20250326	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250326)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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