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CVE-2026-0881

Estado: ModificadaCrítica (10)—

Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:N sin privilegios ni interacción indica T1190. Sandbox escape permite escalada local (T1068), lectura de datos (T1005) y ejecución de código (T1059) con severidad CRITICAL (C:H/I:H/A:H).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareVulnerability Scanning

Tecnologías afectadas (2)

Mozilla — FirefoxMozilla — Thunderbird

CWE

Referencias

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      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
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      "value": "Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147."
    },
    {
      "lang": "es",
      "value": "Escape de sandbox en el componente del Sistema de Mensajería. Esta vulnerabilidad afecta a Firefox < 147 y Thunderbird < 147."
    }
  ],
  "lastModified": "2026-07-15T02:17:59.363",
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