CVE-2026-32203: .NET and Visual Studio Denial of Service Vulnerability

Overview

Severity

High (CVSS 7.5)

CVSS Vector

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

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Apr

Released

2026-04-14

Description

Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.

Affected Products (11)

Developer Tools

• Microsoft Visual Studio 2022 version 17.12
• Microsoft Visual Studio 2022 version 17.14
• .NET 10.0 installed on Windows
• .NET 10.0 installed on Mac OS
• .NET 10.0 installed on Linux
• .NET 8.0 installed on Windows
• .NET 8.0 installed on Linux
• .NET 8.0 installed on Mac OS
• .NET 9.0 installed on Linux
• .NET 9.0 installed on Mac OS
• .NET 9.0 installed on Windows

Security Updates (5)

• Release Notes
• Release Notes
• 5086095
• 5086096
• 5086097

Acknowledgments

Ludvig Pedersen, <a href="https://github.com/vcsjones">vcsjones</a> with GitHub

Revision History

• 2026-04-14: Information published.