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CVE-2026-20920

Windows - Win32K

Microsoft CVSS 7.8 Updated March 15, 2026

Executive Risk Summary

"A use-after-free vulnerability in Windows Win32K allows an authorized attacker to elevate privileges locally, potentially leading to unauthorized access to sensitive data and system compromise. Successful exploitation requires an attacker to have existing access to the system and the ability to execute malicious code."

Operational Audit Arsenal

Target Type System Component
Target Asset win32k.sys
Standard Path %windir%\System32\drivers
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: win32k.sys (System Component)
$Targets = 'win32k.sys'
$SearchPaths = @("$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

Moderate

Internal Work Notes

CVE-2026-20920: Windows Win32K Use-After-Free Vulnerability - Local Privilege Escalation

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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.