CVE-2026-35414

Estado: AnalizadaAlta (8.1)—

OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.24%
Percentil entre todas las CVEs puntuadas: 14
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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access75 %
Impacto principalT1078.001 Default Accountsstealth · persistence · privilege escalation · initial access70 %
Impacto secundarioT1098.001 Additional Cloud Credentialspersistence · privilege escalation65 %

Vector CVSS AV:N (red sin privilegios) indica T1190. OpenSSH es un servicio remoto expuesto. El defecto en authorized_keys principals permite bypass de autenticación, otorgando acceso con credenciales de cuenta válida (T1078.001, T1098.001).

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 Network Segmentation Multi-factor Authentication Vulnerability Scanning User Account Management Password Policies

Tecnologías afectadas (1)

Openbsd — Openssh

CWE

CWE-670

Referencias

JSON original (NVD)

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