firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: 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...

CVE-2026-8959

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11...

PT-2016-1276 · Mozilla +5 · Firefox Esr +7

Name of the Vulnerable Software and Affected Versions: Graphite 2 version 1.2.4 Mozilla Firefox versions prior to 43.0 Firefox ESR versions prior to 38.6.1 Description: The issue is related to the directrun function in directmachine.cpp, which does not validate a certain skip operation. This allo...