---
title: "Microsoft.WindowsDesktop.App.Runtime.win-x64 — CVE-2026-50646"
description: "An unsafe deserialisation flaw affects the NuGet package Microsoft.WindowsDesktop.App.Runtime.win-x64. Affected versions: >= 10.0.0, <= 10.0.9. Fixed from version 10.0.10. CVSS score 7.8."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-09-08-cve-2026-50646
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-08
dateModified: 2026-09-08
---
# Microsoft.WindowsDesktop.App.Runtime.win-x64 — CVE-2026-50646

An unsafe deserialisation flaw affects the NuGet package Microsoft.WindowsDesktop.App.Runtime.win-x64. Affected versions: >= 10.0.0, <= 10.0.9. Fixed from version 10.0.10. CVSS score 7.8.

## What to do

Update Microsoft.WindowsDesktop.App.Runtime.win-x64 to 10.0.10 or later.

| Fact | Value |
| --- | --- |
| Package | Microsoft.WindowsDesktop.App.Runtime.win-x64 |
| Ecosystem | NuGet (.NET) |
| Class | Unsafe deserialisation |
| Affected versions | >= 10.0.0, <= 10.0.9 |
| Fixed version | 10.0.10 |
| CVSS | 7.8 |
| CVE | CVE-2026-50646 |
| GHSA | GHSA-gh2h-rhph-h37g |
| Published on | September 8, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-gh2h-rhph-h37g](https://github.com/advisories/GHSA-gh2h-rhph-h37g) — GitHub Security Advisories
- [NVD — CVE-2026-50646](https://nvd.nist.gov/vuln/detail/CVE-2026-50646) — NVD

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