CVE-2026-21891 Detail
Awaiting Analysis
This CVE record has been marked for NVD enrichment efforts. DescriptionZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In versions up to and including 1.5.0, the application checks the validity of the username but appears to skip, misinterpret, or incorrectly validate the password when the provided username matches a known system service account. The application's login function fails to properly handle the password validation result for these users, effectively granting authenticated access to anyone who knows one of these common usernames and provides any password. As of time of publication, no known patched versions are available. Metrics
NVD enrichment efforts reference publicly available information to associate
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CVSS 4.0 Severity and Vector Strings:
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Weakness Enumeration
Quick InfoCVE Dictionary Entry:CVE-2026-21891 NVD Published Date: 01/08/2026 NVD Last Modified: 01/08/2026 Source: GitHub, Inc. |
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