CVE-2024-21386
HIGH
Microsoft Security Advisory CVE-2024-21386: .NET Denial of Service Vulnerability
Published February 13, 2024Updated February 17, 2026Source: osv
Summary
# Microsoft Security Advisory CVE-2024-21386: .NET Denial of Service Vulnerability
## Executive summary
Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET 6.0, ASP.NET 7.0 and, ASP.NET 8.0 . This advisory also provides guidance on what developers can do to update their applications to address this vulnerability.
A vulnerability exists in ASP.NET applications using SignalR where a malicious client can result in a denial-of-service.
## Announcement
Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/295
### Mitigation factors
Microsoft has not identified any mitigating factors for this vulnerability.
## Affected software
* Any .NET 6.0 application running on .NET 6.0.26 or earlier.
* Any .NET 7.0 application running on .NET 7.0.15 or earlier.
* Any .NET 8.0 application running on .NET 8.0.1 or earlier.
## Affected Packages
The vulnerability affects any Microsoft .NET Core project if it uses any of affected packages versions listed below
### ASP.NET 6.0
Package name | Affected version | Patched version
------------ | ---------------- | -------------------------
[Microsoft.AspNetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm64) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm64) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-x64) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-x64) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-arm64) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-x64) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm64) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x64) | <= 6.0.26 | 6.0.27
[Microsoft.AspNetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x86) | <= 6.0.26 | 6.0.27
### ASP.NET 7.0
Package name | Affected version | Patched version
------------ | ---------------- | -------------------------
[Microsoft.AspNetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm64) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm64) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-x64) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-x64) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-arm64) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-x64) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm64) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x64) | <= 7.0.15 | 7.0.16
[Microsoft.AspNetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x86) | <= 7.0.15 | 7.0.16
### ASP.NET 8.0
Package name | Affected version | Patched version
------------ | ---------------- | -------------------------
[Microsoft.AspNetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm64) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm64) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-x64) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-x64) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-arm64) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-x64) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm64) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x64) | <= 8.0.1 | 8.0.2
[Microsoft.AspNetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x86) | <= 8.0.1 | 8.0.2
## Advisory FAQ
### How do I know if I am affected?
If you have a runtime or SDK with a version listed, or an affected package listed in [affected software](#affected-software) or [affected packages](#affected-packages) , you're exposed to the vulnerability.
### How do I fix the issue?
* To fix the issue please install the latest version of .NET 8.0 or .NET 7.0 or .NET 6.0. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.
* If you have .NET 6.0 or greater installed, you can list the versions you have installed by running the `dotnet --info` command. You will see output like the following;
```
.NET Core SDK (reflecting any global.json):
Version: 6.0.200
Commit: 8473146e7d
Runtime Environment:
OS Name: Windows
OS Version: 10.0.18363
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\6.0.300\
Host (useful for support):
Version: 6.0.5
Commit: 8473146e7d
.NET Core SDKs installed:
6.0.200 [C:\Program Files\dotnet\sdk]
.NET Core runtimes installed:
Microsoft.AspNetCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download
```
* If you're using .NET 8.0, you should download and install .NET 8.0.2 Runtime or .NET 8.0.102 SDK (for Visual Studio 2022 v17.8) from https://dotnet.microsoft.com/download/dotnet-core/8.0.
* If you're using .NET 7.0, you should download and install Runtime 7.0.16 or SDK 7.0.116 (for Visual Studio 2022 v17.4) from https://dotnet.microsoft.com/download/dotnet-core/7.0.
* If you're using .NET 6.0, you should download and install Runtime 6.0.27 or SDK 6.0.419 from https://dotnet.microsoft.com/download/dotnet-core/6.0.
.NET 6.0, .NET 7.0 and, .NET 8.0 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.
Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.
Additionally, if you've deployed [self-contained applications](https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd) targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.
## Other Information
### Reporting Security Issues
If you have found a potential security issue in .NET 8.0 or .NET 7.0 or .NET 6.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at <https://aka.ms/corebounty>.
### Support
You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime and https://github.com/dotnet/aspnet/. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.
### Disclaimer
The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
### External Links
[CVE-2024-21386]( https://www.cve.org/CVERecord?id=CVE-2024-21386)
### Revisions
V1.0 (February 13, 2024): Advisory published.
_Version 1.0_
_Last Updated 2024-02-13_
Remediation
Upgrade to the fixed version using your package manager.
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-arm64 to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm64 --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-arm to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-arm --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-arm to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.osx-arm64 to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.osx-arm64 --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-x86 to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-x86 --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-arm to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-arm --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-x64 to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-x64 --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-x86 to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-x86 --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.osx-x64 to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.osx-x64 --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-arm to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-arm64 to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-arm64 --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-arm to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-x64 to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-x64 --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-x64 to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-x64 --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-x64 to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-x64 --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-arm to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-x64 to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-x64 --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.osx-x64 to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.osx-x64 --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-arm64 to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm64 --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.osx-x64 to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.osx-x64 --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-x64 to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-x64 --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-arm64 to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-arm64 --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-arm64 to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm64 --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-arm to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-x86 to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-x86 --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-arm to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-arm --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.osx-arm64 to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.osx-arm64 --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-x64 to 8.0.2 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-x64 --version 8.0.2
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-arm64 to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-arm64 --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.osx-arm64 to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.osx-arm64 --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-x64 to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-x64 --version 6.0.27
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-x64 to 7.0.16 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.win-x64 --version 7.0.16
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-arm to 6.0.27 or laterdotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm --version 6.0.27
After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.
Affected Packages (36)
| Package | Ecosystem | Affected | Fixed In |
|---|---|---|---|
| Microsoft.AspNetCore.App.Runtime.linux-arm64 | nuget | 3.0.0, 3.0.0-preview5-19227-01, 3.0.1, 3.0.2 (+78 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.win-arm | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.linux-arm | nuget | 3.0.0, 3.0.0-preview5-19227-01, 3.0.1, 3.0.2 (+78 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.osx-arm64 | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 | nuget | 3.0.0, 3.0.1, 3.0.2, 3.0.3 (+77 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.win-x86 | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.win-arm | nuget | 3.0.0, 3.0.0-preview5-19227-01, 3.0.1, 3.0.2 (+78 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.linux-x64 | nuget | 3.0.0, 3.0.0-preview5-19227-01, 3.0.1, 3.0.2 (+78 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.win-x86 | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.osx-x64 | nuget | 3.0.0, 3.0.0-preview5-19227-01, 3.0.1, 3.0.2 (+78 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.linux-musl-arm | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.win-arm64 | nuget | 3.1.10, 3.1.11, 3.1.12, 3.1.13 (+68 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.linux-arm | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.linux-musl-x64 | nuget | 3.0.0, 3.0.0-preview5-19227-01, 3.0.1, 3.0.2 (+78 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.linux-musl-x64 | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.win-x64 | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.linux-arm | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.linux-x64 | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.osx-x64 | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.linux-arm64 | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.osx-x64 | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.linux-musl-x64 | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.win-arm64 | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.linux-arm64 | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.linux-musl-arm | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.win-x86 | nuget | 3.0.0, 3.0.0-preview4-19216-03, 3.0.0-preview5-19227-01, 3.0.1 (+79 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.win-arm | nuget | All versions | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.osx-arm64 | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.linux-x64 | nuget | 8.0.0, 8.0.1 | 8.0.2 |
| Microsoft.AspNetCore.App.Runtime.win-arm64 | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.osx-arm64 | nuget | 6.0.0, 6.0.1, 6.0.10, 6.0.11 (+22 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.win-x64 | nuget | 3.0.0, 3.0.0-preview4-19216-03, 3.0.0-preview5-19227-01, 3.0.1 (+79 more) | 6.0.27 |
| Microsoft.AspNetCore.App.Runtime.win-x64 | nuget | 7.0.0, 7.0.1, 7.0.10, 7.0.11 (+11 more) | 7.0.16 |
| Microsoft.AspNetCore.App.Runtime.linux-musl-arm | nuget | 5.0.1, 5.0.10, 5.0.11, 5.0.12 (+39 more) | 6.0.27 |
Vulnerability Classification
Common Weakness Enumeration (CWE) identifiers for this vulnerability type.
- CWE-400Uncontrolled Resource ConsumptionMITRE
CVSS Score Breakdown
What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Frequently Asked Questions
- What is CVE-2024-21386?
- Microsoft Security Advisory CVE-2024-21386: .NET Denial of Service Vulnerability This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
- How do I check if my project is affected by CVE-2024-21386?
- CVE-2024-21386 affects Microsoft.AspNetCore.App.Runtime.linux-arm64, Microsoft.AspNetCore.App.Runtime.win-arm and Microsoft.AspNetCore.App.Runtime.linux-arm (and 9 more). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2024-21386 and 200,000+ other known vulnerabilities.
Severity & Exploitability
CVSS Score
7.5
High exploitability or significant impact. Prioritize remediation within days.
Also Known As
GHSA-g74q-5xw3-j7q9
BIT-aspnet-core-2024-21386
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- CVE-2023-33170HIGH
Microsoft Security Advisory CVE-2023-33170: .NET Security Feature Bypass Vulnerability
- CVE-2025-24070HIGH
Microsoft Security Advisory CVE-2025-24070: .NET Elevation of Privilege Vulnerability
- CVE-2024-38229HIGH
Microsoft Security Advisory CVE-2024-38229 | .NET Remote Code Execution Vulnerability
- CVE-2026-42899HIGH
Microsoft Security Advisory CVE-2026-42899 – ASP.NET Core Denial of Service Vulnerability
- CVE-2026-56170HIGH
Microsoft Security Advisory CVE-2026-56170 – .NET Denial of Service Vulnerability
- CVE-2024-30046MEDIUM
Microsoft Security Advisory CVE-2024-30046 | .NET Denial of Service Vulnerability
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