Executive Risk Summary
"A vulnerability in the Himmelblau interoperability suite for Microsoft Azure Entra ID and Intune allows an attacker to bypass authentication and obtain a local Unix session as another user. This vulnerability exists in versions prior to 3.1.5 and 2.3.11 and is fixed in these versions."
Anticipated Attack Path
- 1. Exploitation of the authentication bypass vulnerability in the DAG flow
- 2. Obtaining a local Unix session as another user
- 3. Potential lateral movement within the Entra ID domain
Am I Vulnerable?
- Verify the version of Himmelblau being used
- Check for any suspicious login activity from within the Entra ID domain
- Review and monitor Unix session activity for unusual patterns
Operational Audit Arsenal
Target Type Service
Target Asset token_validate
Standard Path Himmelblau Device Authorization Grant (DAG) flow
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: token_validate (Service)
$Targets = 'token_validate'
$SearchPaths = @("$env:windir\System32", "$env:ProgramFiles", "${env:ProgramFiles(x86)}")
Get-ChildItem -Path $SearchPaths -Include $Targets -Recurse -ErrorAction SilentlyContinue |
Select-Object FullName, @{Name="Version";Expression={$_.VersionInfo.ProductVersion}}Patch Impact Forecast
Reboot Required Unlikely
Minimal, as the patch only updates the Himmelblau suite
Internal Work Notes
CVE-2026-45108: Himmelblau authentication bypass vulnerability in DAG flow, patched in versions 3.1.5 and 2.3.11
Technical Intelligence & Operational Utilities • Delivered Weekly
Intelligence Sources
Related Microsoft Threats
Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.