CVE-2026-33825

Estado: AnalizadaAlta (7.8)⚠ Explotación activa

Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.

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: 0.40%
Percentil entre todas las CVEs puntuadas: 32
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: 22/4/2026
Plazo de remediación: 6/5/2026
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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation95 %
Impacto principalT1548 Abuse Elevation Control Mechanismprivilege escalation85 %

Vector AV:L/PR:L sin UI permite escalada local de privilegios. CWE-1220 (acceso insuficiente) en Defender; KEV activo en ransomware confirma T1548. Acceso C:H/I:H/A:H sugiere ejecución y control post-escalada.

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

Execution Prevention Update Software User Account Management Threat Intelligence Program Restrict File and Directory Permissions Privileged Account Management

Tecnologías afectadas (1)

Microsoft — Defender Antimalware Platform

CWE

CWE-1220

Referencias

JSON original (NVD)

Mostrar

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          "confidentialityImpact": "HIGH"
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  "published": "2026-04-14T18:17:35.100",
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  "descriptions": [
    {
      "lang": "en",
      "value": "Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally."
    },
    {
      "lang": "es",
      "value": "Granularidad insuficiente de control de acceso en Microsoft Defender permite a un atacante autorizado elevar privilegios localmente."
    }
  ],
  "lastModified": "2026-07-24T22:10:00.140",
  "cisaActionDue": "2026-05-06",
  "cisaExploitAdd": "2026-04-22",
  "configurations": [
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  "cisaVulnerabilityName": "Microsoft Defender Insufficient Granularity of Access Control Vulnerability"
}