# CVE-2025-54882: Himmelblau's Kerberos credential cache collection is world readable

> Himmelblau stores Kerberos credential caches with world-readable permissions, allowing local attackers to read sensitive cloud TGTs.

- **Severity:** High 7.1 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 7 Aug 2025
- **Updated:** 7 Aug 2025
- **Also known as:** GHSA-phfx-rjfw-wj83, openSUSE-SU-2025:15425-1

## What is CVE-2025-54882?

CVE-2025-54882 is a high-severity vulnerability in himmelblau-idm himmelblau, published on 7 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

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.

Weakness: CWE-522 (Insufficiently Protected Credentials)

## Which versions are affected by CVE-2025-54882?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `himmelblau` | openSUSE:Tumbleweed | All versions | 1.2.0+git.0.6befefc-1.1 |

Products: Himmelblau-Idm Himmelblau.

## How do I fix CVE-2025-54882?

Upgrade to a fixed version.

## Is CVE-2025-54882 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-54882 exists.

## Other vulnerabilities in himmelblau-idm himmelblau

- [CVE-2026-31957](https://insights.sbomify.com/CVE-2026-31957/): Himmelblau unset domain configuration can allow any-tenant authentication at first login for remote deployments (critical 10.0)
- [CVE-2026-31979](https://insights.sbomify.com/CVE-2026-31979/): himmelblaud-tasks: local privilege escalation via /tmp symlink attack on Kerberos ccache (high 8.8)
- [CVE-2026-34397](https://insights.sbomify.com/CVE-2026-34397/): himmelblau: NSS fake-primary group lookup reintroduces name collision risk (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-54882 and fix it if it is affected.

What it is: CVE-2025-54882 is a high-severity vulnerability in himmelblau-idm himmelblau, published on 7 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-54882 exists.

Affected product: himmelblau-idm himmelblau. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-54882/ (Markdown: https://insights.sbomify.com/CVE-2025-54882/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-54882
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-54882
- OSV: https://osv.dev/vulnerability/CVE-2025-54882

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-54882/
Summaries are generated and may contain mistakes; the official description above is the record.