Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Himmelblau 0.9.x derives numeric GIDs for Entra ID groups from the group display name when himmelblau.conf id_attr_map = name (the default configuration). Because Microsoft Entra ID allows multiple groups with the same displayName (including end-user–created personal/O365 groups, depending on tenant policy), distinct directory groups can collapse to the same numeric GID on Linux. This issue only applies to Himmelblau versions 0.9.0 through 0.9.22. Any resource or service on a Himmelblau-joined host that enforces authorization by numeric GID (files/dirs, etc.) can be unintentionally accessible to a user who creates or joins a different Entra/O365 group that happens to share the same displayName as a privileged security group. Users should upgrade to 0.9.23, or 1.0.0 or later, to receive a patch. Group to GID mapping now uses Entra ID object IDs (GUIDs) and does not collide on same-name groups. As a workaround, use tenant policy hardening to restrict arbitrary group creation until all hosts are patched.
CVE-2025-59044
This medium-severity CVE scores 4.4 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 97% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.4
- EG Score
- 4.4(medium)
- EG Risk
- 20(Track)EG Risk 20/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity44% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 3.2%
- KEV
- Not listed
Published
September 9, 2025
Last Modified
April 15, 2026
References (3)
- security-advisories@githubhttps://github.com/himmelblau-idm/himmelblau/commit/76c5b41df7f89378af65dc7c0d0484d7d41b3281
- security-advisories@githubhttps://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-2m43-mmg9-3rgc
- security-advisories@githubhttps://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-gcxr-m95v-qcf7
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 39× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 113 total refreshes for this CVE.
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Related CVEs(same CWE)
Same CWE
10 shownCWE-1188
Frequently asked(5)
What is CVE-2025-59044?
When was CVE-2025-59044 disclosed?
Is CVE-2025-59044 actively exploited?
What is the CVSS score of CVE-2025-59044?
How do I remediate CVE-2025-59044?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2025-59044
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