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CVE-2024-21390

Microsoft Authenticator

Microsoft CVSS 7.1 Updated March 14, 2026

Executive Risk Summary

"A vulnerability in Microsoft Authenticator could allow an attacker to elevate their privileges, potentially gaining unauthorized access to sensitive information. This vulnerability requires an attacker to have existing access to the system, but could still have significant impact if exploited."

Operational Audit Arsenal

Target Type Executable
Target Asset Microsoft.Authenticator.dll
Standard Path %ProgramFiles%\Microsoft Authenticator
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: Microsoft.Authenticator.dll (Executable)
$Targets = 'Microsoft.Authenticator.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 Unlikely

Authentication services may be briefly interrupted

Internal Work Notes

Elevation of Privilege vulnerability in Microsoft Authenticator requires patching to prevent potential unauthorized access

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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.