CVE-2026-4525

Estado: ModificadaAlta (8.8)—

If a Vault auth mount is configured to pass through the "Authorization" header, and the "Authorization" header is used to authenticate to Vault, Vault forwarded the Vault token to the auth plugin backend. Fixed in 2.0.0, 1.21.5, 1.20.10, and 1.19.16.

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: 0.59%
Percentil entre todas las CVEs puntuadas: 46
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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement75 %
Impacto principalT1212 Exploitation for Credential Accesscredential access80 %
Impacto secundarioT1078.001 Default Accountsstealth · persistence · privilege escalation · initial access75 %

CVE afecta a Vault autenticado (PR:L) en red sin privilegios iniciales (AV:N). Filtración de tokens de autenticación (CWE-201: información expuesta) permitiendo robo de credenciales y acceso como usuario autenticado.

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 Application Isolation and Sandboxing Exploit Protection Update Software Application Developer Guidance Vulnerability Scanning

Tecnologías afectadas (1)

Hashicorp — Vault

CWE

CWE-201
CWE-201

Referencias

JSON original (NVD)

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