CVE-2026-25592

CRITICAL

9.9

Description

Semantic Kernel is an SDK used to build, orchestrate, and deploy AI agents and multi-agent systems. Prior to 1.71.0, an Arbitrary File Write vulnerability has been identified in Microsoft's Semantic Kernel .NET SDK, specifically within the SessionsPythonPlugin. The problem has been fixed in Microsoft.SemanticKernel.Core version 1.71.0. As a mitigation, users can create a Function Invocation Filter which checks the arguments being passed to any calls to DownloadFileAsync  or UploadFileAsync and ensures the provided localFilePath is allow listed.

Details CVE

Score CVSS v3.19.9

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie2/6/2026

Derniere modification2/19/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-22

References

https://github.com/microsoft/semantic-kernel/blob/main/dotnet/samples/Demos/CodeInterpreterPlugin/Program.cs#L61-L64(security-advisories@github.com)

https://github.com/microsoft/semantic-kernel/pull/13478/changes#diff-88d3cacba2bfa84eef8f2aa171b34f9940338cbb784a3ffc49f5fe3af1b8943d(security-advisories@github.com)

https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-2ww3-72rp-wpp4(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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