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archive/Patch now/AIR-2026-0464
closedclosed 6 Feb 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-25592: Semantic Kernel Arbitrary File Write Vulnerability

Semantic Kernel

An arbitrary file write vulnerability was discovered in Microsoft's Semantic Kernel .NET SDK within the SessionsPythonPlugin. The issue was patched in Microsoft.SemanticKernel.Plugins.Core version 1.71.0.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
9.9
EPSS
0.03 · top 15% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
6 Feb 2026
last update
6 Feb 2026
CVE ids
CVE-2026-25592other records

Timeline · 1

  1. 6 Feb 2026CVE-2026-25592: Semantic Kernel has Arbitrary File Write via AI Agent Function Calling in .NET SDK

Sources · 1

Advisories and databases

  1. 2026-02-06
    CVE-2026-25592: Semantic Kernel has Arbitrary File Write via AI Agent Function Calling in .NET SDK
    GitHub Advisory Database · github.com/advisories/GHSA-2ww3-72rp-wpp4

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Microsoft, Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
arbitrary-file-writesemantic-kernel
dates
happened 6 Feb 2026 · first reported 6 Feb 2026
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 07:00Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-25592: Semantic Kernel Arbitrary File Write Vulnerability

https://gcdradar.vercel.app/incidents/cve-2026-25592-semantic-kernel-arbitrary-file-write-vulnerab · AIR-2026-0464 · closed 2026-02-06

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-02-06
- AI role: Attack on AI
- Products: Semantic Kernel
- CVE ids: CVE-2026-25592
- CVSS: 9.9

## Summary

An arbitrary file write vulnerability was discovered in Microsoft's Semantic Kernel .NET SDK within the SessionsPythonPlugin. The issue was patched in Microsoft.SemanticKernel.Plugins.Core version 1.71.0.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-02-06: CVE-2026-25592: Semantic Kernel has Arbitrary File Write via AI Agent Function Calling in .NET SDK (https://github.com/advisories/GHSA-2ww3-72rp-wpp4)

## Sources

- 2026-02-06 GitHub Advisory Database: CVE-2026-25592: Semantic Kernel has Arbitrary File Write via AI Agent Function Calling in .NET SDK https://github.com/advisories/GHSA-2ww3-72rp-wpp4

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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