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CVE-2026-35341

Estado: AnalizadaAlta (7.1)—

A vulnerability in uutils coreutils mkfifo allows for the unauthorized modification of permissions on existing files. When mkfifo fails to create a FIFO because a file already exists at the target path, it fails to terminate the operation for that path and continues to execute a follow-up set_permissions call. This results in the existing file's permissions being changed to the default mode (often 644 after umask), potentially exposing sensitive files such as SSH private keys to other users on the system.

CVSS

Probabilidad de explotación (EPSS)

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.

Acceso local sin interacción (AV:L, UI:N) por usuario con privilegios (PR:L) permite cambiar permisos de archivos existentes (T1222.001) exponiendo claves SSH (T1552.007), escalando desde nivel de usuario a acceso a credenciales sensibles (CWE-732).

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 ManagementUser Account ManagementThreat Intelligence ProgramRestrict File and Directory PermissionsNetwork SegmentationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Uutils — Coreutils

CWE

Referencias

JSON original (NVD)

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