MCP Extension Code Injection Vulnerability in Autodesk Fusion Desktop

published 2026-06-22 4 mo ago modified 2026-10-25 14 d ago also EUVD-2026-38328

cvss: 9.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 links 3

Autodesk Fusion 2703.1.20

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 4 mo ago (2026-06-22)

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

Autodesk Fusion

Classification

Weakness

CWE-94 Improper Control of Generation of Code

References

dl.appstreaming.autodesk.com /production/installers/Fusion%20Client%20Downloader.exe
patch, product
dl.appstreaming.autodesk.com /production/installers/Fusion%20Client%20Downloader.dmg
patch, product
autodesk.com /trust/security-advisories/adsk-sa-2026-0008
vendor-advisory, patch

Sources

CVE List CVE-2026-10789
NVD CVE-2026-10789

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary