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CVE-2025-21372

Windows - Brokering File System

Microsoft CVSS 7.8 Updated March 10, 2026

Executive Risk Summary

"The Microsoft Brokering File System Elevation of Privilege Vulnerability (CVE-2025-21372) allows an attacker to elevate privileges on a vulnerable system. Successful exploitation could grant an attacker elevated access to sensitive data and system resources."

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

Apply security update to mitigate Elevation of Privilege vulnerability in Microsoft Brokering File System

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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.