CVE-2026-84121criticalCWE-416

Sandbox escape due to use-after-free in the DOM: Security component

28Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 9.6epss 0.3%

probabilidad de explotación

0.3%top 78% de las CVE

explotación observada

noninguna fuente lo reporta

Sandbox escape due to use-after-free in the DOM: Security component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Productos afectados

Mozilla · Firefox Mozilla · Thunderbird

Referencias

https://bugzilla.mozilla.org/show_bug.cgi?id=2059018 https://www.mozilla.org/security/advisories/mfsa2026-82/https://www.mozilla.org/security/advisories/mfsa2026-83/https://www.mozilla.org/security/advisories/mfsa2026-84/https://www.mozilla.org/security/advisories/mfsa2026-85/https://www.mozilla.org/security/advisories/mfsa2026-86/https://www.mozilla.org/security/advisories/mfsa2026-87/https://www.mozilla.org/security/advisories/mfsa2026-88/