FKIE_CVE-2026-25592

Vulnerability from fkie_nvd - Published: 2026-02-06 21:16 - Updated: 2026-04-15 00:35
Severity ?
9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
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.
References
security-advisories@github.comhttps://github.com/microsoft/semantic-kernel/blob/main/dotnet/samples/Demos/CodeInterpreterPlugin/Program.cs#L61-L64
security-advisories@github.comhttps://github.com/microsoft/semantic-kernel/pull/13478/changes#diff-88d3cacba2bfa84eef8f2aa171b34f9940338cbb784a3ffc49f5fe3af1b8943d
security-advisories@github.comhttps://github.com/microsoft/semantic-kernel/security/advisories/GHSA-2ww3-72rp-wpp4
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027s Semantic Kernel\u202f.NET SDK, specifically within the\u202fSessionsPythonPlugin. 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\u202f or UploadFileAsync and ensures the provided localFilePath is allow listed."
    },
    {
      "lang": "es",
      "value": "Semantic Kernel es un SDK utilizado para construir, orquestar y desplegar agentes de IA y sistemas multiagente. Antes de la versi\u00f3n 1.70.0, se ha identificado una vulnerabilidad de escritura arbitraria de archivos en el SDK .NET de Semantic Kernel de Microsoft, espec\u00edficamente dentro del SessionsPythonPlugin. El problema ha sido solucionado en la versi\u00f3n 1.70.0 de Microsoft.SemanticKernel.Core. Como mitigaci\u00f3n, los usuarios pueden crear un Filtro de Invocaci\u00f3n de Funci\u00f3n que verifica los argumentos que se pasan a cualquier llamada a DownloadFileAsync o UploadFileAsync y asegura que el localFilePath proporcionado est\u00e9 en una lista de permitidos."
    }
  ],
  "id": "CVE-2026-25592",
  "lastModified": "2026-04-15T00:35:42.020",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.9,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-06T21:16:17.647",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/microsoft/semantic-kernel/blob/main/dotnet/samples/Demos/CodeInterpreterPlugin/Program.cs#L61-L64"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/microsoft/semantic-kernel/pull/13478/changes#diff-88d3cacba2bfa84eef8f2aa171b34f9940338cbb784a3ffc49f5fe3af1b8943d"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-2ww3-72rp-wpp4"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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