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CRITICAL: THIS VULNERABILITY IS ACTIVELY BEING EXPLOITED IN THE WILD (CISA KEV CATALOG)
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CVE-2024-21351

Exploited

Windows 11 - SmartScreen

Microsoft CVSS 7.6 Updated March 14, 2026

Executive Risk Summary

"A security feature bypass vulnerability exists in Windows SmartScreen, which could allow an attacker to bypass security features and potentially execute malicious code. This vulnerability is considered critical and should be patched as soon as possible to prevent potential attacks."

Operational Audit Arsenal

Target Type Executable
Target Asset smartscreen.exe
Standard Path %ProgramFiles%\Windows Defender\SmartScreen.exe
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: smartscreen.exe (Executable)
$Targets = 'smartscreen.exe'
$SearchPaths = @("$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

Windows Defender Service

Internal Work Notes

Apply latest Windows update to patch CVE-2024-21351, a critical Windows SmartScreen Security Feature Bypass Vulnerability

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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.