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CVSS 10.0CVSS 10.0 · CRITICAL

CVE-2026-4689

Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

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Severidad

Puntaje: 10.0(CRITICAL)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
AV: NETWORK
AC: LOW
PR: NONE
UI: NONE
S: CHANGED
C: HIGH
I: HIGH
A: HIGH
Tipo de falla (CWE): CWE-190CWE-754CWE-120

EPSS

Probabilidad de explotación (próx. 30 días): 0.0066 (0.7%)
Percentil: 47.5%
EPSS: 2026-07-14

Afecta

mozilla:firefoxmozilla:thunderbird

Descripción técnica

Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Publicada: 24/3/2026, 13:16:04
Última modificación: 15/7/2026, 2:22:46

Referencias

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