CVE-2021-0920

Estado: AnalizadaMedia (6.4)⚠ Explotación activa

In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 6.4

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.82%
Percentil entre todas las CVEs puntuadas: 56
Fecha de la puntuación: 6/10/2026

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).

CISA KEV — explotada activamente

Añadida al catálogo: 23/5/2022
Plazo de remediación: 13/6/2022
Uso conocido en ransomware: Unknown

🎯 Técnicas ATT&CK

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

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation95 %

Vulnerabilidad de race condition (CWE-362) en el kernel de Unix que permite escalada de privilegios local. El vector AV:L y PR:H indica explotación local con privilegios elevados (T1068). El impacto lleva a ejecución de código con privilegios del sistema (T1059).

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

Threat Intelligence Program Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (3)

Debian — Debian Linux Google — Android Linux — Linux Kernel

CWE

CWE-362, CWE-416
CWE-416

Referencias

JSON original (NVD)

Mostrar

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