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HimmelblauApplication · Himmelblau Idm

CVE-2025-54882

HIGH · 7.1 CVSS v3.1 Published 2025-08-07
Fix available
A fix is available. Upgrade to 0.9.22 / 1.2.0 or later.
See remediation →
73/100
Remediation priority · Elevated
Public exploit Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-522

Credentials are stored or transmitted without adequate protection, so an attacker who reaches them can reuse them directly. One weak link here can unravel an entire system. Remediation means strong hashing for stored secrets, encryption in transit, and never writing credentials to logs.

General guidance for the insufficiently protected credentials class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
HimmelblauApplication
Affected:>= 0.8.0, < 0.9.22>= 1.0.0, < 1.2.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 0.9.22 / 1.2.0 or later
Fixed in 0.9.221.2.0
Vendor patch github.com →
Recommended fix High confidence

0.9.22 for 0.8.0-0.9.x branch; 1.2.0 for 1.0.0-1.1.x branch

  1. 1. Identify the currently installed Himmelblau version using package manager or binary version flag
  2. 2. For versions 0.8.0 through 0.9.21: upgrade to version 0.9.22
  3. 3. For versions 1.0.0-beta through 1.1.0: upgrade to version 1.2.0
  4. 4. After upgrade, verify the credential cache files have appropriate permissions (owner-only read/write)
  5. 5. Test that authentication still functions correctly after the permission changes
Caveat The fix changes file permissions on credential cache files; ensure any automation or monitoring tools that rely on world-readable permissions are updated

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,250. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-54882 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data