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CVE-2025-21359

Windows - Kernel

Microsoft CVSS 7.8 Updated March 10, 2026

Executive Risk Summary

"A security feature bypass vulnerability exists in the Windows Kernel, allowing an attacker to bypass security features. This vulnerability could potentially be exploited by an attacker to gain elevated privileges on a vulnerable system."

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

Windows Kernel Security Feature Bypass Vulnerability (CVE-2025-21359) - apply latest security updates to prevent potential privilege escalation attacks

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Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.