CVE-2025-21365

Estado: AnalizadaAlta (7.8)—

Microsoft Office Remote Code Execution Vulnerability

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.94%
Percentil entre todas las CVEs puntuadas: 60
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 Executionexecution95 %
Impacto principalT1059 Command and Scripting Interpreterexecution85 %
Impacto secundarioT1574.007 Path Interception by PATH Environment Variablestealth · execution75 %

AV:L + UI:R indica ejecución en cliente (abrir archivo preparado); CWE-426 sugiere carga de librerías; RCE con confidencialidad/integridad/disponibilidad comprometidas implica ejecución de código y potencial secuestro de dependencias.

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 Audit Restrict Web-Based Content Restrict File and Directory Permissions Privileged Account Management Limit Software Installation

Tecnologías afectadas (2)

Microsoft — 365 Apps Microsoft — Office Long Term Servicing Channel

CWE

CWE-426
NVD-CWE-noinfo

Referencias

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21365

JSON original (NVD)

Mostrar

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  "lastModified": "2026-06-17T08:43:12.127",
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