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CVE-2026-26030

Semantic Kernel

Microsoft CVSS 9.9 Updated March 15, 2026

Executive Risk Summary

"A remote code execution vulnerability exists in Microsoft's Semantic Kernel Python SDK versions prior to 1.39.4, specifically within the `InMemoryVectorStore` filter functionality. Users should upgrade to version 1.39.4 or higher to mitigate this vulnerability."

Operational Audit Arsenal

Target Type DLL
Target Asset python-1.39.4
Standard Path %PROGRAMFILES%\Python\Lib\site-packages
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: python-1.39.4 (DLL)
$Targets = 'python-1.39.4'
$SearchPaths = @("$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

Semantic Kernel services

Internal Work Notes

Upgrade Semantic Kernel Python SDK to version 1.39.4 or higher to address remote code execution vulnerability

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Intelligence Sources

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