CVE-2021-34486
Estado: AnalizadaAlta (7.8)⚠ Explotación activa
Windows Event Tracing 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: 9.25%
- Percentil entre todas las CVEs puntuadas: 95
- 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: 28/3/2022
- Plazo de remediación: 18/4/2022
- 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.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation95 % - Impacto principal
T1059.001PowerShellexecution85 %
CWE-416 (use-after-free) en Windows Event Tracing permite escalada de privilegios sin interacción (AV:L, PR:L, UI:N). Ejecución de código confirmada por impacto C:H I:H A:H y actividad en KEV con ransomware.
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 (8)
CWE
- CWE-416
- CWE-416
Referencias
JSON original (NVD)
Mostrar
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}
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}