NVD Vulnerability Detail
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CVE-2026-2776
Summary

Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Summary

Escape de sandbox debido a condiciones de contorno incorrectas en el componente de Telemetría en el Software Externo. Esta vulnerabilidad afecta a Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, y Thunderbird < 140.8.

Publication Date Feb. 24, 2026, 11:16 p.m.
Registration Date April 15, 2026, 11:20 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:*:*:* 115.33.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* 148.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* 128.0 140.8.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* 140.8.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* 148.0
Related information, measures and tools
Common Vulnerabilities List