CVE-2026-54121

Estado: AnalizadaAlta (8.8)—

Improper authorization in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges over a network.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.78%
Percentil entre todas las CVEs puntuadas: 54
Fecha de la puntuación: 4/10/2026

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 movement85 %
Impacto principalT1068 Exploitation for Privilege Escalationprivilege escalation80 %
Impacto secundarioT1098 Account Manipulationpersistence · privilege escalation70 %

AV:N/PR:L indica explotación remota con privilegios (T1210). AD CS con autorización deficiente (CWE-285) permite escalada de privilegios y potencial abuso de cuentas/certificados.

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 Network Segmentation Disable or Remove Feature or Program Application Isolation and Sandboxing Exploit Protection

Tecnologías afectadas (7)

Microsoft — Windows 10 1607 Microsoft — Windows 10 1809 Microsoft — Windows Server 2012 Microsoft — Windows Server 2016 Microsoft — Windows Server 2019 Microsoft — Windows Server 2022 Microsoft — Windows Server 2025

CWE

CWE-285

Referencias

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54121

JSON original (NVD)

Mostrar

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