CVE-2026-16361

CRITICAL9.8

Memory safety bugs fixed in Thunderbird ESR 140.13

Published Jul 21, 2026

Modified 3 days ago

Details

Memory safety bugs present in Thunderbird ESR 140.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox ESR 115.38, Firefox ESR 140.13, and Thunderbird 140.13.

References

WEB

https://bugzilla.mozilla.org/buglist.cgi?bug_id=2029734%2C2036518

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-16361

WEB

https://www.mozilla.org/security/advisories/mfsa2026-69/

WEB

https://www.mozilla.org/security/advisories/mfsa2026-70/

WEB

https://www.mozilla.org/security/advisories/mfsa2026-72/

CVSS Analysis