CVE-2026-62901: .NET 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-Aug

Released

2026-08-11

Description

Unchecked input for loop condition in .NET allows an unauthorized attacker to deny service over a network.

Affected Products (10)

Developer Tools

• Microsoft Visual Studio 2026 version 18.8
• .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
• Microsoft Visual Studio 2022 version 17.14

Security Updates (3)

• 5122106
• 5122104
• 5122105

Acknowledgments

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

Revision History

• 2026-08-11: Information published.