CVE-2026-42904

Estado: AnalizadaCrítica (9.6)—

Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacent network.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Puntuación base: 9.6

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.53%
Percentil entre todas las CVEs puntuadas: 43
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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement95 %
Impacto principalT1068 Exploitation for Privilege Escalationprivilege escalation90 %
Impacto secundarioT1059 Command and Scripting Interpreterexecution85 %

Buffer overflow en TCP/IP (red adyacente, AV:A) en Windows permite ejecutar código y escalar privilegios (C:H/I:H/A:H). Explotación de servicio remoto (T1210) con impacto de escalada (T1068) y ejecución de comandos (T1059).

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

Threat Intelligence Program Privileged Account Management Execution Prevention Disable or Remove Feature or Program Application Isolation and Sandboxing Exploit Protection

Tecnologías afectadas (8)

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 2025

CWE

CWE-122

Referencias

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42904

JSON original (NVD)

Mostrar

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