CVE-2026-34397

HIGH EPSS 5.3%
Published Apr 1, 20263mo ago · Modified Jun 17, 20262w ago
7.0 CVSS 3.1
High
Find Similar
Published Apr 1, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.0
Exploitability
1.0
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
5.3% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-269 Improper Privilege Management Authorization

Affected Products 2

VendorProductVersionRange
himmelblau-idmhimmelblau*≥2.0.0  –  <2.3.9
himmelblau-idmhimmelblau*≥3.0.0  –  <3.1.1

References 3

  • github.com https://github.com/himmelblau-idm/himmelblau/releases/tag/2.3.9
    ProductRelease Notes
  • github.com https://github.com/himmelblau-idm/himmelblau/releases/tag/3.1.1
    ProductRelease Notes
  • github.com https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-v7xx-7mqc-g835
    ExploitMitigationVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.