CVE-2018-8120

Estado: AnalizadaAlta (7)⚠ Explotación activa💥 Exploit

Existe una vulnerabilidad de elevación de privilegios en Windows cuando el componente Win32k no gestiona adecuadamente los objetos en la memoria. Esto también se conoce como "Win32k Elevation of Privilege Vulnerability". Esto afecta a Windows Server 2008, Windows 7 y Windows Server 2008 R2. El ID de este CVE es diferente de CVE-2018-8124, CVE-2018-8164 y CVE-2018-8166.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 73%
Percentil entre todas las CVEs puntuadas: 99
Fecha de la puntuación: 9/10/2026

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: 15/3/2022
Plazo de remediación: 5/4/2022
Uso conocido en ransomware: Known

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Módulo de Metasploit (exploit fiable y al alcance de cualquiera) · Windows SetImeInfoEx Win32k NULL Pointer Dereference
Publicado en Exploit-DB · Microsoft Windows - SetImeInfoEx Win32k NULL Pointer Dereference (Metasploit) (22/10/2018)
Prueba de concepto en GitHub (no verificada) · Lista de pruebas de concepto en GitHub

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

🎯 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 %
Impacto secundarioT1486 Data Encrypted for Impactimpact75 %
Impacto secundarioT1548.002 Bypass User Account Controlprivilege escalation80 %

Vulnerabilidad local en Win32k sin privilegios de administrador (PR:L) permite escalada de privilegios. Explotada activamente por ransomware, permitiendo ejecución de código con permisos elevados.

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

Update Software Threat Intelligence Program Privileged Account Management Execution Prevention Behavior Prevention on Endpoint Audit

Tecnologías afectadas (2)

Microsoft — Windows 7 Microsoft — Windows Server 2008

CWE

CWE-404
CWE-404

Referencias

JSON original (NVD)

Mostrar

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