CVE - CVE-2025-6433

CVE-ID
CVE-2025-6433	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
If a user visited a webpage with an invalid TLS certificate, and granted an exception, the webpage was able to provide a WebAuthn challenge that the user would be prompted to complete. This is in violation of the WebAuthN spec which requires "a secure transport established without errors". This vulnerability affects Firefox < 140.
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=1954033 URL:https://bugzilla.mozilla.org/show_bug.cgi?id=1954033 MISC:https://www.mozilla.org/security/advisories/mfsa2025-51/ URL:https://www.mozilla.org/security/advisories/mfsa2025-51/
Assigning CNA
Mozilla Corporation
Date Record Created
20250620	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 (20250620)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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