CVE-2025-14333

HIGH8.1

Memory safety bugs fixed in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146

Published Dec 9, 2025

Modified 2 days ago

Details

Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145. 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 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

References

WEB

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1966501%2C1997639

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2025-14333

WEB

https://www.mozilla.org/security/advisories/mfsa2025-92/

WEB

https://www.mozilla.org/security/advisories/mfsa2025-94/

WEB

https://www.mozilla.org/security/advisories/mfsa2025-95/

WEB