CVE-2025-6433 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  secure transport established without errors. This vulnerability affects Firefox < 140.

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1954033 https://www.mozilla.org/security/advisories/mfsa2025-51/

CNNVD-202506-3078 (Published: 2025-06-24)

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