CVE-2026-50649: .NET Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 7.8)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Jul

Released

2026-07-14

Description

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

Affected Products (5)

Developer Tools

• Microsoft Visual Studio 2022 version 17.12
• .NET 8.0 installed on Windows
• .NET 9.0 installed on Windows
• Microsoft Visual Studio 2022 version 17.14
• Microsoft Visual Studio 2026 version 18.7

Security Updates (5)

• Release Notes
• 5104032
• 5104033
• Release Notes
• Release Notes

Acknowledgments

<a href="https://x.com/kookiz/">Kevin Gosse</a>, 41ae55e9310ff27fa6f26af4727e5590

Revision History

• 2026-07-14: Information published.