CVE-2026-10789: MCP Extension Code Injection Vulnerability in Autodesk Fusion Desktop

Severity: critical (CVSS 9.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-22 · updated 2026-10-25
Weakness: CWE-94

Description

A maliciously crafted webpage, when visited by a user with Autodesk Fusion Desktop running and the MCP extension enabled, can trigger a vulnerability in the MCP extension that could allow arbitrary code execution. A successful exploit may allow code to execute with the privileges of the current user.

Affected products

Autodesk Fusion: before 2703.1.20 — fixed in 2703.1.20

How to fix

Upgrade to a fixed version: Autodesk Fusion 2703.1.20. Check the vendor advisory for mitigations.

References

https://dl.appstreaming.autodesk.com/production/installers/Fusion%20Client%20Downloader.dmg
https://dl.appstreaming.autodesk.com/production/installers/Fusion%20Client%20Downloader.exe
https://www.autodesk.com/trust/security-advisories/adsk-sa-2026-0008

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