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9.6критическая

CVE-2026-8959

Описание

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.

Затрагиваемое ПО
Mozilla FirefoxMozilla Thunderbird
CVSS
Балл9.6 — критическая
ВекторCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Источники
https://bugzilla.mozilla.org/show_bug.cgi?id=2034754https://www.mozilla.org/security/advisories/mfsa2026-46/https://www.mozilla.org/security/advisories/mfsa2026-48/https://www.mozilla.org/security/advisories/mfsa2026-50/https://www.mozilla.org/security/advisories/mfsa2026-51/