Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.CreditsMozillaReferenceshttps://bugzilla.mozilla.org/show_bug.cgi?id=2057113https://www.mozilla.org/security/advisories/mfsa2026-106/https://www.mozilla.org/security/advisories/mfsa2026-108/https://www.mozilla.org/security/advisories/mfsa2026-109/https://www.mozilla.org/security/advisories/mfsa2026-110/
