CVE-2023-1521

Estado: AnalizadaAlta (7.8)—

On Linux the sccache client can execute arbitrary code with the privileges of a local sccache server, by preloading the code in a shared library passed to LD_PRELOAD.

If the server is run as root (which is the default when installing the snap package https://snapcraft.io/sccache ), this means a user running the sccache client can get root privileges.

CVSS

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

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.36%
Percentil entre todas las CVEs puntuadas: 28
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 · execution90 %

Vulnerabilidad local (AV:L) sin interacción (UI:N) que permite escalada de privilegios mediante LD_PRELOAD en sccache. Impacto: secuestro de dependencias dinámicas (T1574.007) para lograr ejecución como root.

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 Threat Intelligence Program Restrict File and Directory Permissions Audit Application Isolation and Sandboxing Exploit Protection

Tecnologías afectadas (1)

Mozilla — Sccache

CWE

CWE-426

Referencias

JSON original (NVD)

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    }
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  "lastModified": "2026-06-17T05:28:08.833",
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