CVE-2025-29816

Estado: AnalizadaAlta (7.5)—

Improper input validation in Microsoft Office Word allows an unauthorized attacker to bypass a security feature over a network.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.46%
Percentil entre todas las CVEs puntuadas: 38
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.

ExplotaciónT1203 Exploitation for Client Executionexecution85 %
Impacto principalT1059 Command and Scripting Interpreterexecution60 %
Impacto secundarioT1005 Data from Local Systemcollection50 %
Impacto secundarioT1078 Valid Accountsstealth · persistence · privilege escalation · initial access55 %

Vector CVSS con UI:R (interacción del usuario) e impacto en confidencialidad, integridad y disponibilidad. Apertura de documento preparado en Word ejecuta código. Bypass de feature de seguridad sugiere ejecución de comandos y posible acceso a credenciales o datos.

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

Privileged Account Management Application Developer Guidance Active Directory Configuration User Training User Account Management Restrict Web-Based Content

Tecnologías afectadas (4)

Microsoft — 365 Apps Microsoft — Office Microsoft — Office Long Term Servicing Channel Microsoft — Word

CWE

CWE-349

Referencias

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29816

JSON original (NVD)

Mostrar

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