Vulnerability Description
A maliciously constructed IMAP line could cause an out-of-bounds buffer read. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2060488
- https://www.mozilla.org/security/advisories/mfsa2026-94/
- https://www.mozilla.org/security/advisories/mfsa2026-95/
- https://www.mozilla.org/security/advisories/mfsa2026-96/
FAQ
What is CVE-2026-92239?
CVE-2026-92239 is a documented vulnerability. A maliciously constructed IMAP line could cause an out-of-bounds buffer read. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
How severe is CVE-2026-92239?
CVSS scoring is not yet available for CVE-2026-92239. Check NVD for updates.
Is there a patch for CVE-2026-92239?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.