CVE-2026-33841

Estado: AnalizadaAlta (7.8)—

Heap-based buffer overflow in Windows Kernel 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: 0.33%
Percentil entre todas las CVEs puntuadas: 25
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).

🎯 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 principalT1059 Command and Scripting Interpreterexecution85 %
Impacto secundarioT1548 Abuse Elevation Control Mechanismprivilege escalation75 %

AV:L sin UI:N y PR:L indican acceso local autenticado; CWE-122 (heap overflow) permite ejecutar código con privilegios elevados. Impacto en ejecución de comandos y escalada de privilegios confirmados por descripción de elevación de privilegios.

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 Privileged Account Management Audit Update Software User Account Management Threat Intelligence Program

Tecnologías afectadas (9)

Microsoft — Windows 10 21h2 Microsoft — Windows 10 22h2 Microsoft — Windows 11 23h2 Microsoft — Windows 11 24h2 Microsoft — Windows 11 25h2 Microsoft — Windows 11 26h1 Microsoft — Windows Server 2022 Microsoft — Windows Server 2022 23h2 Microsoft — Windows Server 2025

CWE

CWE-122

Referencias

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33841

JSON original (NVD)

Mostrar

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