# CVE-2023-38180: .NET Denial of Service Vulnerability

Source: https://junglewise.ai/threats/cve-2023-38180-microsoft-net-core-and-visual-studio-denial-of-service  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-08-09. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2023-38180 · Severity: critical · CVSS 3.1 · Exploited in the wild · Published 2023-08-09

Microsoft .NET, ASP.NET, and Visual Studio are vulnerable to a denial-of-service attack due to uncontrolled resource consumption. The vulnerability allows an unauthenticated remote attacker to cause a DoS condition via the network.

Technologies: [Microsoft .NET Core](https://junglewise.ai/threats/technologies/net-core), [Microsoft Visual Studio](https://junglewise.ai/threats/technologies/visual-studio), [Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-win-arm64), [Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-win-x64), [Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-win-x86). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft), [NuGet](https://junglewise.ai/threats/vendors/nuget).

## Quick answers

**Is CVE-2023-38180 exploited in the wild?** Yes. CVE-2023-38180 is known to be exploited in the wild, first recorded on 9 August 2023. Treat it as urgent.

**How severe is CVE-2023-38180?** Critical severity, with a CVSS score of 3.1, published 9 August 2023.

**Which products and versions are affected?** Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) ECOSYSTEM:introduced=7.0.0,fixed=7.0.10; Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) ECOSYSTEM:introduced=7.0.0,fixed=7.0.10; Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) ECOSYSTEM:introduced=7.0.0,fixed=7.0.10; Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv (NuGet) ECOSYSTEM:introduced=6.0.0,fixed=6.0.21; and 1 more.

**Is there a fix for CVE-2023-38180?** Yes. Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet): upgrade to 7.0.10 or later; Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): upgrade to 7.0.10 or later; Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): upgrade to 7.0.10 or later; Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv (NuGet): upgrade to 6.0.21 or later; Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets (NuGet): upgrade to 2.1.40 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2023-38180 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2023-38180?** Check whether you run Microsoft .NET Core, Microsoft Visual Studio, Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet): upgrade to 7.0.10 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.win-arm64 --version 7.0.10
  ```

- Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): upgrade to 7.0.10 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.win-x64 --version 7.0.10
  ```

- Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): upgrade to 7.0.10 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.win-x86 --version 7.0.10
  ```

- Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv (NuGet): upgrade to 6.0.21 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv --version 6.0.21
  ```

- Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets (NuGet): upgrade to 2.1.40 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets --version 2.1.40
  ```


## Affected products

- Microsoft .NET 6.0.0 to 6.0.21, 7.0.0 to 7.0.10
- Microsoft ASP.NET Core 2.1 to 2.1.40
- Microsoft Visual Studio 2022 17.2.0 to 17.2.18, 17.4.0 to 17.4.10, 17.6.0 to 17.6.6

## Identifiers

- CVE-2023-38180
- GHSA-vmch-3w2x-vhgq

## Timeline

- 2023-08-09: disclosed
- 2023-08-09: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2023-08-09: patched: Microsoft released patches for affected products.
- exploited: Reported as exploited in the wild.

## Related threats

- [Microsoft Visual Studio heap buffer overflow RCE](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-224be73b)
- [Microsoft ASP.NET Core race condition privilege escalation](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-asp-net-core-security-04275796)
- [Microsoft Visual Studio heap-based buffer overflow](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-6a4b9d28)
- [Microsoft Visual Studio deserialization remote code execution](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-1eb2f932)
- [Microsoft Visual Studio stack-based buffer overflow](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-d956164d)