CVE-2021-42287
Estado: AnalizadaAlta (8.8)⚠ Explotación activa
Active Directory Domain Services Elevation of Privilege Vulnerability
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 77%
- 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: 11/4/2022
- Plazo de remediación: 2/5/2022
- 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
T1210Exploitation of Remote Serviceslateral movement85 % - Impacto principal
T1548Abuse Elevation Control Mechanismprivilege escalation90 % - Impacto secundario
T1078.002Domain Accountsstealth · persistence · privilege escalation · initial access75 %
Vulnerabilidad de escalada de privilegios en Active Directory Domain Services accesible con PR:L, requiriendo acceso local/red de dominio para explotar y elevar permisos, típicamente hacia cuentas administrativas de dominio (conocido en 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 (7)
CWE
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
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"value": "Active Directory Domain Services Elevation of Privilege Vulnerability"
},
{
"lang": "es",
"value": "Una vulnerabilidad de Elevación de Privilegios en Active Directory Domain Services. Este ID de CVE es diferente de CVE-2021-42278, CVE-2021-42282, CVE-2021-42291"
}
],
"lastModified": "2026-08-19T19:23:00.553",
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"cisaExploitAdd": "2022-04-11",
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