CVE-2023-0547

OCSP revocation status of recipient certificates was not checked when sending S/Mime encrypted email, and revoked certificates would be accepted. Thunderbird versions from 68 to 102.9.1 were affected by this bug. This vulnerability affects Thunderbird < 102.10.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-10-25)

CWE

CWE-295

Published

2023-06-02

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• mozilla:thunderbird

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1811298
• https://www.mozilla.org/security/advisories/mfsa2023-15/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1811298
• https://www.mozilla.org/security/advisories/mfsa2023-15/

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