Zimaos
CVE-2026-28442
HIGH
Severity by source
AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionGitHub Advisory
ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.5.2-beta3, users are restricted from deleting internal system files or folders through the application interface. However, when interacting directly with the API, these restrictions can be bypassed. By altering the path parameter in the delete request, internal OS files and directories can be removed successfully. The backend processes these manipulated requests without validating whether the targeted path belongs to restricted system locations. This demonstrates improper input validation and broken access control on sensitive filesystem operations. No known public patch is available.
AnalysisAI
ZimaOS 1.5.2-beta3 fails to validate filesystem paths in its API delete endpoint, allowing authenticated users to bypass UI restrictions and remove critical system files and directories. Public exploit code exists for this vulnerability, and the lack of input validation on path parameters enables attackers with API access to potentially render the system unbootable or cause denial of service. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Authenticated user account required (PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.5 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker could exploit this vulnerability to compromise the affected system. |
| Remediation | Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all ZimaOS 1.5.2-beta3 deployments and assess their criticality and exposure to untrusted users. …
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