CVE-2026-50525: .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-Jul
Released
2026-07-14
Last Updated
2026-07-21
EPSS Score
0.60% (percentile: 46.2%)

Description

Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.

Affected Products (65)

Developer Tools

  • Microsoft Visual Studio 2022 version 17.12
  • .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
  • Microsoft Visual Studio 2022 version 17.14
  • .NET 9.0 installed on Mac OS
  • .NET 9.0 installed on Linux
  • .NET 9.0 installed on Windows
  • Microsoft .NET Framework 3.5 on Windows 11 Version 26H1 for ARM64-based Systems
  • Microsoft .NET Framework 4.8.1 on Windows 11 version 26H1 for x64-based Systems
  • Microsoft .NET Framework 3.5 on Windows 11 version 26H1 for x64-based Systems
  • Microsoft Visual Studio 2026 version 18.7
  • Microsoft .NET Framework 4.8.1 on Windows 11 Version 26H1 for ARM64-based Systems
  • Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems
  • Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems
  • Microsoft .NET Framework 4.8 on Windows Server 2016
  • Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)
  • Microsoft .NET Framework 4.8 on Windows Server 2012
  • Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)
  • Microsoft .NET Framework 4.8 on Windows Server 2012 R2
  • Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation)
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation)
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 (Server Core installation)
  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012
  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation)
  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2
  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation)
  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022
  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 (Server Core installation)
  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems
  • ... and 15 more

Security Updates (25)

Acknowledgments

Levi Broderick

Revision History

  • 2026-07-14: Information published.
  • 2026-07-20: Updated product information in the Software Update table. This is an informational change only.
  • 2026-07-21: Updated product information in the Software Update table. This is an informational change only.