Home Microsoft CVE-2025-21367
Back to Microsoft

CVE-2025-21367

Windows - Win32 Kernel Subsystem

Microsoft CVSS 7.8 Updated March 10, 2026

Executive Risk Summary

"A vulnerability in the Windows Win32 Kernel Subsystem could allow an attacker to elevate their privileges, potentially leading to unauthorized access to sensitive data and system resources. This vulnerability requires an attacker to have existing access to the system, but could be exploited to gain higher levels of access."

Operational Audit Arsenal

Target Type DLL
Target Asset ntdll.dll
Standard Path %windir%\System32
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: ntdll.dll (DLL)
$Targets = 'ntdll.dll'
$SearchPaths = @("$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

System services may be affected

Internal Work Notes

Elevation of Privilege vulnerability in Windows Win32 Kernel Subsystem, requiring patching to prevent potential unauthorized access

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.