CVE-2021-31201
Estado: AnalizadaAlta (7.8)⚠ Explotación activa
Microsoft Enhanced Cryptographic Provider 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: 2.62%
- Percentil entre todas las CVEs puntuadas: 85
- Fecha de la puntuación: 5/10/2026
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: 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
T1548Abuse Elevation Control Mechanismprivilege escalation90 %
Vector AV:L/PR:L indica escalada de privilegios local sin interacción del usuario. Afecta Enhanced Cryptographic Provider en Windows, permitiendo elevar privilegios (T1548). Con acceso privilegiado se logra ejecución de comandos y acceso a datos sensibles.
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 (16)
Microsoft — Windows 10 1507Microsoft — Windows 10 1607Microsoft — Windows 10 1809Microsoft — Windows 10 1909Microsoft — Windows 10 2004Microsoft — Windows 10 20h2Microsoft — Windows 10 21h1Microsoft — Windows 7Microsoft — Windows 8.1Microsoft — Windows RT 8.1Microsoft — Windows Server 2004Microsoft — Windows Server 2008Microsoft — Windows Server 2012Microsoft — Windows Server 2016Microsoft — Windows Server 2019Microsoft — Windows Server 20h2
CWE
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
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"published": "2021-06-08T23:15:08.387",
"references": [
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"vulnStatus": "Analyzed",
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"value": "Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability"
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{
"lang": "es",
"value": "Una vulnerabilidad de Escalada de Privilegios en Microsoft Enhanced Cryptographic Provider. Este ID de CVE es diferente de CVE-2021-31199"
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],
"lastModified": "2026-06-17T03:51:26.553",
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"matchCriteriaId": "5F422A8C-2C4E-42C8-B420-E0728037E15C"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "AF07A81D-12E5-4B1D-BFF9-C8D08C32FF4F"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6EC20279-4DB0-4D87-93EF-235D0D36B1D3",
"versionEndExcluding": "10.0.14393.4467"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "ACDF4D88-D052-40A6-96A7-865C33112B4F",
"versionEndExcluding": "10.0.17763.1999"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*",
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"matchCriteriaId": "B963E9AB-D1F7-45D1-8B7E-675732475401",
"versionEndExcluding": "10.0.19042.1052"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secure@microsoft.com",
"cisaRequiredAction": "Apply updates per vendor instructions.",
"cisaVulnerabilityName": "Microsoft Enhanced Cryptographic Provider Privilege Escalation Vulnerability"
}