NVD Vulnerability Detail
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CVE-2026-4689
Summary

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.

Summary

Escape de sandbox debido a condiciones de límite incorrectas, desbordamiento de entero en el componente XPCOM. Esta vulnerabilidad afecta a Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149 y Thunderbird < 140.9.

Publication Date March 24, 2026, 10:16 p.m.
Registration Date April 15, 2026, 11:21 a.m.
Last Update April 14, 2026, 12:17 a.m.
CVSS3.1 : CRITICAL
スコア 10.0
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC) 低
攻撃に必要な特権レベル(PR) 不要
利用者の関与(UI) 不要
影響の想定範囲(S) 変更あり
機密性への影響(C) 高
完全性への影響(I) 高
可用性への影響(A) 高
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* 115.34.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* 149.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* 128.0 140.9.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* 140.9.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* 149.0
Related information, measures and tools
Common Vulnerabilities List