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CVE-2026-20810

Estado: AnalizadaAlta (7.8)—

Free of memory not on the heap in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVSS

Probabilidad de explotación (EPSS)

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

CWE-590 (Free of memory not on the heap) en controlador de Windows con AV:L/PR:L/UI:N permite escalada de privilegios local en sistema autenticado.

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 (4)

CWE

Referencias

JSON original (NVD)

Mostrar
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          "options": [
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  "published": "2026-01-13T18:16:07.547",
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      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20810",
      "tags": [
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      "value": "Free of memory not on the heap in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally."
    },
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      "value": "Liberación de memoria fuera del heap en el controlador de función auxiliar de Windows para WinSock permite a un atacante autorizado elevar privilegios localmente."
    }
  ],
  "lastModified": "2026-06-17T10:17:49.373",
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