CVE-2021-41357

Estado: AnalizadaAlta (7.8)⚠ Explotación activa

Win32k Elevation of Privilege Vulnerability

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 1.58%
Percentil entre todas las CVEs puntuadas: 75
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: 25/4/2022
Plazo de remediación: 16/5/2022
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 %
Impacto principalT1059.001 PowerShellexecution85 %
Impacto secundarioT1548.002 Bypass User Account Controlprivilege escalation80 %

Vector AV:L/PR:L indica acceso local con privilegios limitados; Win32k es componente kernel para escalada de privilegios. Impactos C:H/I:H sugieren ejecución de comandos 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

Privileged Account Management Execution Prevention Update Software Threat Intelligence Program Disable or Remove Feature or Program Code Signing

Tecnologías afectadas (7)

Microsoft — Windows 10 2004 Microsoft — Windows 10 20h2 Microsoft — Windows 10 21h1 Microsoft — Windows 11 21h2 Microsoft — Windows Server 2004 Microsoft — Windows Server 2022 Microsoft — Windows Server 20h2

CWE

NVD-CWE-noinfo

Referencias

JSON original (NVD)

Mostrar

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      "lang": "en",
      "value": "Win32k Elevation of Privilege Vulnerability"
    },
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      "lang": "es",
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    }
  ],
  "lastModified": "2026-06-17T04:08:24.537",
  "cisaActionDue": "2022-05-16",
  "cisaExploitAdd": "2022-04-25",
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}