CVE-2025-54882: high-severity vulnerability in himmelblau-idm himmelblau
Himmelblau's Kerberos credential cache collection is world readable
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.2%
Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. In versions 0.8.0 through 0.9.21 and 1.0.0-beta through 1.1.0, Himmelblau stores the cloud TGT received during logon in the Kerberos credential cache. The created credential cache collection and received credentials are stored as world readable. This is fixed in versions 0.9.22 and 1.2.0. To work around this issue, remove all read access to Himmelblau caches for all users except for owners.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected products
himmelblau-idm · himmelblauRelated CVEs — himmelblau-idm himmelblau
In the same product, most dangerous first.
CVE-2026-31957CRITICALHimmelblau unset domain configuration can allow any-tenant authentication at first login for remote deploymentsEPSS 0.6%CVE-2025-49012MEDIUMHimmelblau's Name-Based Group Matching in `pam_allow_groups` Leads to Potential Security BypassEPSS 0.4%CVE-2026-45108HIGHHimmelblau: Authentication Bypass via Cross-User Local Session Impersonation in Device Authorization Grant (DAG) FlowEPSS 0.2%CVE-2026-31979HIGHhimmelblaud-tasks: local privilege escalation via /tmp symlink attack on Kerberos ccacheEPSS 0.2%CVE-2025-53013MEDIUMHimmelblau offline auth permits authentication with invalid Hello PINEPSS 0.2%CVE-2025-24034LOWHimmelblau leaks credentials in the debug logEPSS 0.2%
References
https://github.com/himmelblau-idm/himmelblau/commit/b562053df3dffb1dd9ab3d09af986886773be2adhttps://github.com/himmelblau-idm/himmelblau/commit/faae58b0384aca8b21b4be5f1c507412eec3778ahttps://github.com/himmelblau-idm/himmelblau/releases/tag/0.9.22https://github.com/himmelblau-idm/himmelblau/releases/tag/1.2.0https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-phfx-rjfw-wj83