CVE-2025-11715

Details

Memory safety bugs present in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. 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 affects Firefox < 144, Firefox ESR < 140.4, Thunderbird < 144, and Thunderbird < 140.4.

Affected Packages

Firefox

Ubuntu 14.04 LTSUbuntu 16.04 LTSUbuntu 18.04 LTSUbuntu 20.04 LTSUbuntu 22.04 LTS

Fixed in:

144

Mozilla Firefox

Windows 10 (1507)Windows 10 (1607) / Server 2016Windows 10 (1809) / Server 2019Windows 10 (1903)Windows 10 (1909)

Fixed in:

144

Mozilla Firefox ESR

Windows 10 (1507)Windows 10 (1607) / Server 2016Windows 10 (1809) / Server 2019Windows 10 (1903)Windows 10 (1909)

Fixed in:

140.4

Firefox ESR

macOS 14macOS 15macOS 26

Fixed in:

140.4

References

WEBhttps://bugzilla.mozilla.org/buglist.cgi?bug_id=1983838%2C1987624%2C1988244%2C1988912%2C1989734%2C1990085%2C1991899 WEBhttps://lists.debian.org/debian-lts-announce/2025/10/msg00015.html WEBhttps://lists.debian.org/debian-lts-announce/2025/10/msg00031.html ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2025-11715 WEBhttps://www.mozilla.org/security/advisories/mfsa2025-81/WEBhttps://www.mozilla.org/security/advisories/mfsa2025-83/WEBhttps://www.mozilla.org/security/advisories/mfsa2025-84/WEBhttps://www.mozilla.org/security/advisories/mfsa2025-85/

CVE-2025-11715

Details

Affected Packages

References

CVSS Analysis

Ecosystems(28)

Timeline