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CRITICAL: THIS VULNERABILITY IS ACTIVELY BEING EXPLOITED IN THE WILD (CISA KEV CATALOG)
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CVE-2025-21391

Exploited

Windows - Storage

Microsoft CVSS 7.1 Updated March 10, 2026

Executive Risk Summary

"A Windows Storage Elevation of Privilege Vulnerability exists, allowing attackers to gain elevated privileges. This vulnerability is listed in the Known Exploited Vulnerabilities Catalog by CISA, indicating potential active exploitation."

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

Storage services may be affected

Internal Work Notes

Apply latest Windows security updates to mitigate potential Elevation of Privilege vulnerability in Windows Storage component.

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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.