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CVE-2026-27919

Windows - Universal Plug and Play (UPnP) Device Host

Microsoft CVSS 7.8 Updated April 16, 2026

Executive Risk Summary

"A vulnerability in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally. This could potentially lead to unauthorized access to sensitive data and system compromise."

Anticipated Attack Path

  1. 1. Initial Exploitation: Attacker gains access to the system
  2. 2. Privilege Escalation: Attacker exploits the UPnP vulnerability to elevate privileges
  3. 3. Lateral Movement: Attacker moves laterally within the system to gain further access

Am I Vulnerable?

  • Verify the presence of the UPnP Device Host service
  • Check for any suspicious activity related to the UPnP service
  • Apply the latest security patches to the affected system

Operational Audit Arsenal

Target Type Service
Target Asset upnphost
Standard Path Windows Services
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: upnphost (Service)
$Targets = 'upnphost'
$SearchPaths = @("$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 Likely

Minimal to Moderate

Internal Work Notes

CVE-2026-27919: Windows UPnP Device Host vulnerability allowing local privilege escalation. Apply latest security patches and monitor system activity.

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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.