EPSS
Percentile
21.9%
thunderbird is vulnerable to Signature Verification Bypass. Certificate OCSP revocation status was not checked when verifying S/Mime signatures which allows mails signed with a revoked certificate to be displayed as having a valid signature.
bugzilla.mozilla.org/show_bug.cgi?id=1769000
security-tracker.debian.org/tracker/CVE-2023-0430
www.mozilla.org/security/advisories/mfsa2023-04/