CVE-2026-16412

CRITICAL9.8

Memory safety bugs fixed in Thunderbird ESR 140.13 and Thunderbird 153

Published Jul 21, 2026

Modified 3 days ago

Details

Memory safety bugs present in Thunderbird ESR 140.12 and Thunderbird 152. 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 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

References

WEB

https://bugzilla.mozilla.org/buglist.cgi?bug_id=2005113%2C2025369%2C2026301%2C2028663%2C2029761%2C2042242%2C2043271%2C2043300%2C2044612%2C2045378%2C2045406%2C2045407%2C2045616%2C2045626%2C2045730%2C2045732%2C2045769%2C2045771%2C2047957%2C2048934%2C2049818%2C2049822%2C2050151%2C2050368%2C2051653%2C2051658

WEB

https://bugzilla.mozilla.org/buglist.cgi?bug_id=2043035%2C2045057%2C2045187%2C2045402%2C2045417%2C2045482%2C2045611%2C2045618%2C2045756%2C2046917%2C2047718

WEB

https://bugzilla.mozilla.org/buglist.cgi?bug_id=2045413%2C2053635%2C2053637

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-16412

WEB

https://www.mozilla.org/security/advisories/mfsa2026-68/

WEB