What is CVE-2025-54882?

CVE-2025-54882 is a high-severity vulnerability in Himmelblau-Idm Himmelblau, classified under Insufficiently Protected Credentials. CVSS score: 7.1/10. Published 2025-08-07.

How severe is CVE-2025-54882?

High severity. CVSS v3 base score is 7.1 out of 10.

Is CVE-2025-54882 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Himmelblau-Idm Himmelblau

CVE-2025-54882

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.

Published 2025-08-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (10.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: -0.000

Affected products

Himmelblau-Idm Himmelblau — versions >= 0.8.0, < 0.9.22, >= 1.0.0-beta, < 1.2.0

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-phfx-rjfw-wj83 (Exploit, Vendor Advisory)
github.com/himmelblau-idm/himmelblau/commit/b562053df3dffb1dd9ab3d09af986886773… (Patch)
github.com/himmelblau-idm/himmelblau/commit/faae58b0384aca8b21b4be5f1c507412eec… (Patch)
github.com/himmelblau-idm/himmelblau/releases/tag/0.9.22 (Release Notes)
github.com/himmelblau-idm/himmelblau/releases/tag/1.2.0 (Release Notes)

Frequently asked questions

What is CVE-2025-54882?: CVE-2025-54882 is a high-severity vulnerability in Himmelblau-Idm Himmelblau, classified under Insufficiently Protected Credentials. CVSS score: 7.1/10. Published 2025-08-07.
How severe is CVE-2025-54882?: High severity. CVSS v3 base score is 7.1 out of 10.
Is CVE-2025-54882 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.