CVE-2026-55366

Estado: AnalizadaCrítica (9.8)—

In IP Multimedia Subsystem, there is a possible authentication bypass due to a logic error in the code. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 9.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.46%
Percentil entre todas las CVEs puntuadas: 38
Fecha de la puntuación: 3/10/2026

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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access95 %
Impacto principalT1068 Exploitation for Privilege Escalationprivilege escalation90 %
Impacto secundarioT1078 Valid Accountsstealth · persistence · privilege escalation · initial access85 %

AV:N/PR:N/UI:N indica explotación remota sin autenticación previa (T1190). Bypass de autenticación en IMS permite escalada de privilegios remota a raíz (T1068) e impersonación de cuentas (T1078) sin interacción del usuario.

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 Management Application Isolation and Sandboxing Exploit Protection Update Software Application Developer Guidance Active Directory Configuration

Tecnologías afectadas (1)

Google — Android

CWE

CWE-693

Referencias

https://source.android.com/docs/security/bulletin/pixel/2026/2026-09-01

JSON original (NVD)

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