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CVE-2025-21294

Target: Windows - IIS

Microsoft CVSS 8.1 Updated March 8, 2026
Threat Level HIGH

Executive Risk Summary

"A remote code execution vulnerability exists in Microsoft Digest Authentication, allowing attackers to execute arbitrary code on affected systems. This vulnerability can be exploited by sending a specially crafted request to a vulnerable server, potentially leading to a complete system compromise."

Operational Audit Arsenal

Target Type Server
Target Asset IIS Server
Standard Path Network perimeter
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: IIS Server (Server)
$Target = "IIS Server"
$SearchPaths = @("$env:windir\System32", "$env:ProgramFiles", "${env:ProgramFiles(x86)}")

Get-ChildItem -Path $SearchPaths -Filter $Target -Recurse -ErrorAction SilentlyContinue | 
Select-Object FullName, @{Name="Version";Expression={$_.VersionInfo.ProductVersion}}

Patch Impact Forecast

Reboot Required Required
Service Disruption

Moderate

Internal Work Notes

Apply the latest security updates from Microsoft to mitigate the Microsoft Digest Authentication Remote Code Execution Vulnerability (CVE-2025-21294).

Intelligence Sources

Scope of Impact

Windows 10 1507 Windows 11 23H2 Windows Server 2012 Windows Server 2022 23H2 Windows Server 2016 Windows Server 2019 Windows Server 2012 (Version r2) Windows 11 24H2 Windows Server 2025 Windows Server 2008 Windows 10 21H2 Windows 10 22H2 Windows Server 2008 (Version r2) Windows Server 2022 Windows 11 22H2 Windows 10 1607 Windows 10 1809

Original NVD Description

"Microsoft Digest Authentication Remote Code Execution Vulnerability"

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