CVE-2025-54882

Himmelblau's Kerberos credential cache collection is world readable

CVSS 7.1 HIGHEPSS 0.2%CWE-522

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.1EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

07 Aug 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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 · himmelblau

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References

https://github.com/himmelblau-idm/himmelblau/commit/b562053df3dffb1dd9ab3d09af986886773be2ad https://github.com/himmelblau-idm/himmelblau/commit/faae58b0384aca8b21b4be5f1c507412eec3778a https://github.com/himmelblau-idm/himmelblau/releases/tag/0.9.22 https://github.com/himmelblau-idm/himmelblau/releases/tag/1.2.0 https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-phfx-rjfw-wj83