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CVE-2025-6433

WebAuthn would allow a user to sign a challenge on a webpage with an invalid TLS certificate PUBLISHED

Description (CNA)

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 was fixed in Firefox 140 and Thunderbird 140.

Affected (CNA)

Vendor / productVersions
Mozilla / Firefoxunaffected 140 through *
Mozilla / Thunderbirdunaffected 140 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.