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CVE-2026-28286

Estado: AnalizadaCrítica (9.9)—

ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.5.2-beta3, the application enforces restrictions in the frontend/UI to prevent users from creating files or folders in internal OS paths. However, when interacting directly with the API, the restrictions are bypass-able. By sending a crafted request targeting paths like /etc, /usr, or other sensitive system directories, the API successfully creates files or directories in locations where normal users should have no write access. This indicates that the API does not properly validate the target path, allowing unauthorized operations on critical system directories. No known patch is publicly available.

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.

CWE-73 con AV:N, PR:L permite bypasser validaciones en API remota para escribir en directorios críticos (/etc, /usr), escalando privilegios, manipulando archivos de sistema y potencialmente desplegando persistencia.

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

Restrict File and Directory PermissionsVulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementOperating System ConfigurationRemote Data Storage

Tecnologías afectadas (1)

Zimaspace — Zimaos

CWE

Referencias

JSON original (NVD)

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          "options": [
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      "value": "ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.5.2-beta3, the application enforces restrictions in the frontend/UI to prevent users from creating files or folders in internal OS paths. However, when interacting directly with the API, the restrictions are bypass-able. By sending a crafted request targeting paths like /etc, /usr, or other sensitive system directories, the API successfully creates files or directories in locations where normal users should have no write access. This indicates that the API does not properly validate the target path, allowing unauthorized operations on critical system directories. No known patch is publicly available."
    },
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      "value": "ZimaOS es una bifurcación de CasaOS, un sistema operativo para dispositivos Zima y sistemas x86-64 con UEFI. En la versión 1.5.2-beta3, la aplicación impone restricciones en el frontend/UI para evitar que los usuarios creen archivos o carpetas en rutas internas del sistema operativo. Sin embargo, al interactuar directamente con la API, las restricciones son eludibles. Al enviar una solicitud manipulada dirigida a rutas como /etc, /usr u otros directorios sensibles del sistema, la API crea con éxito archivos o directorios en ubicaciones donde los usuarios normales no deberían tener acceso de escritura. Esto indica que la API no valida correctamente la ruta de destino, permitiendo operaciones no autorizadas en directorios críticos del sistema. No hay ningún parche conocido disponible públicamente."
    }
  ],
  "lastModified": "2026-06-17T10:28:25.847",
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