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CVE-2025-21378

Windows - CSC Service

Microsoft CVSS 7.8 Updated March 10, 2026

Executive Risk Summary

"A vulnerability in the Windows CSC Service allows for elevation of privilege, potentially enabling attackers to gain elevated access to system resources. This vulnerability could be exploited by an attacker to gain control of a system, making it essential to apply patches as soon as possible."

Operational Audit Arsenal

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

Internal Work Notes

Elevation of Privilege vulnerability in Windows CSC Service, requiring immediate patching to prevent potential system compromise.

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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.