[CVE-2026-84121] Sandbox escape due to use-after-free in the DOM: Security component. This vulnerability was fixed in…

Descripción técnica

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, and Firefox ESR 153.2.

Puntuación CVSS

Score: 9.6/10 — Severidad: CRITICAL — Estado NIST: Received

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

Debilidades (CWE)

CWE-416

Fuente oficial

Publicado en NIST NVD.