CVE-2025-14821

Estado: AnalizadaAlta (7)—

A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.13%
Percentil entre todas las CVEs puntuadas: 2
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 escalation85 %
Impacto principalT1574.007 Path Interception by PATH Environment Variablestealth · execution80 %
Impacto secundarioT1557.002 ARP Cache Poisoningcredential access · collection75 %
Impacto secundarioT1565.002 Transmitted Data Manipulationimpact70 %

Acceso local (AV:L) sin interacción del usuario en Windows permite manipular archivos de configuración no protegidos en C:\etc para ejecutar ataques MITM, degradar conexiones SSH e interceptar/modificar datos en tránsito (CWE-427: descarga insegura de archivos de configuración).

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 Encrypt Sensitive Information User Training Threat Intelligence Program Restrict File and Directory Permissions Network Intrusion Prevention

Tecnologías afectadas (2)

Libssh — Libssh Redhat — Hardened Images

CWE

CWE-427

Referencias

JSON original (NVD)

Mostrar

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