CVE-2026-34397
Last modified
CVE-2026-34397 is a high-severity vulnerability rated 7/10 on the CVSS scale. Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. From versions 2.0.0-alpha to before 2.3.9 and 3.0.0-alpha to before 3.1.1, there is a conditional local privilege escalation vulnerability in an edge-case naming collision. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. From versions 2.0.0-alpha to before 2.3.9 and 3.0.0-alpha to before 3.1.1, there is a conditional local privilege escalation vulnerability in an edge-case naming collision. Only authenticated himmelblau users whose mapped CN/short name exactly matches a privileged local group name (e.g., "sudo", "wheel", "docker", "adm") can cause the NSS module to resolve that group name to their fake primary group. If the system uses NSS results for group-based authorization decisions (sudo, polkit, etc.), this can grant the attacker the privileges of that group. This issue has been patched in versions 2.3.9 and 3.1.1.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Himmelblau-Idm | Himmelblau | >= 2.0.0, < 2.3.9 |
| Himmelblau-Idm | Himmelblau | >= 3.0.0, < 3.1.1 |
References
- https://github.com/himmelblau-idm/himmelblau/releases/tag/2.3.9Product, Release Notes
- https://github.com/himmelblau-idm/himmelblau/releases/tag/3.1.1Product, Release Notes
- https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-v7xx-7mqc-g835Exploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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