CVE-2021-1732
Estado: AnalizadaAlta (7.8)⚠ Explotación activa
Windows 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: 78%
- Percentil entre todas las CVEs puntuadas: 100
- 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: 3/11/2021
- Plazo de remediación: 17/11/2021
- Uso conocido en ransomware: Known
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation95 % - Impacto principal
T1059Command and Scripting Interpreterexecution90 % - Impacto secundario
T1547.001Registry Run Keys / Startup Folderpersistence · privilege escalation75 %
AV:L con PR:L indica escalada de privilegios local. CWE-787 (buffer overflow) en Win32k permite ejecución de código en kernel. KEV+ransomware confirma T1068 con impacto T1059 para ejecución posterior.
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
Tecnologías afectadas (9)
CWE
- CWE-787
- CWE-787
Referencias
- http://packetstormsecurity.com/files/161880/Win32k-ConsoleControl-Offset-Confusion.html
- http://packetstormsecurity.com/files/166169/Win32k-ConsoleControl-Offset-Confusion-Privilege-Escalation.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1732
- http://packetstormsecurity.com/files/161880/Win32k-ConsoleControl-Offset-Confusion.html
- http://packetstormsecurity.com/files/166169/Win32k-ConsoleControl-Offset-Confusion-Privilege-Escalation.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1732
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1732
JSON original (NVD)
Mostrar
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