CVE-2024-21386 .NET Denial of Service Vulnerability
High 7.5
Published
Updated
Check this codebase for CVE-2024-21386 and fix it if it is affected.
What it is: CVE-2024-21386 is a high-severity vulnerability in Microsoft Visual Studio 2022, published on 13 Feb 2024.
Exploitation: There is no known exploitation of CVE-2024-21386 in the wild and no public exploit code.
Affected packages and fixed versions:
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): affected all versions; fixed in 6.0.27
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): affected all versions; fixed in 6.0.27
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): affected from 7.0.0; fixed in 7.0.16
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): affected from 7.0.0; fixed in 7.0.16
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): affected from 8.0.0; fixed in 8.0.2
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): affected from 8.0.0; fixed in 8.0.2
- aspnet-core (Bitnami): affected from 6.0.0; fixed in 6.0.27, 7.0.16, 8.0.2
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): affected all versions; fixed in 6.0.27
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): affected all versions; fixed in 6.0.27
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): affected from 7.0.0; fixed in 7.0.16
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): affected from 7.0.0; fixed in 7.0.16
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): affected from 8.0.0; fixed in 8.0.2
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2024-21386/ (Markdown: https://insights.sbomify.com/CVE-2024-21386/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2024-21386?
CVE-2024-21386 is a high-severity vulnerability in Microsoft Visual Studio 2022, published on 13 Feb 2024.
Official description
.NET Denial of Service Vulnerability
Weakness: CWE-400
Which versions are affected by CVE-2024-21386?
40 open source packages ship an affected version, including Microsoft.AspNetCore.App.Runtime.linux-arm, aspnet-core and Microsoft.AspNetCore.App.Runtime.linux-arm64. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.AspNetCore.App.Runtime.linux-arm NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-arm NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-arm NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-arm NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-arm NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-arm NuGet | From 8.0.0 | 8.0.2 |
34 more packages
aspnet-core Bitnami | From 6.0.0 | 6.0.27, 7.0.16, 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-arm64 NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-arm64 NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-arm64 NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-arm64 NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-arm64 NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-arm64 NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-x64 NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-x64 NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.linux-x64 NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-x64 NuGet | From 7.0.0 | 7.0.16 |
Microsoft.AspNetCore.App.Runtime.linux-x64 NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.linux-x64 NuGet | From 8.0.0 | 8.0.2 |
Microsoft.AspNetCore.App.Runtime.osx-arm64 NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.osx-arm64 NuGet | All versions | 6.0.27 |
Microsoft.AspNetCore.App.Runtime.osx-arm64 NuGet | From 7.0.0 | 7.0.16 |
Products include Microsoft Asp.net Core, Microsoft Visual Studio 2022.
How do I fix CVE-2024-21386?
Upgrade Microsoft.AspNetCore.App.Runtime.linux-arm to a fixed version for your release line: 6.0.27, 7.0.16 or 8.0.2.
Is CVE-2024-21386 being exploited?
There is no known exploitation of CVE-2024-21386 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Visual Studio 2022
- CVE-2025-55315 ASP.NET Security Feature Bypass Vulnerability
- CVE-2026-88092 ASP.NET Core Tampering Vulnerability
- CVE-2026-40372 ASP.NET Core Elevation of Privilege Vulnerability
- CVE-2021-43877 ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
- CVE-2020-0603 Remote code execution in ASP.NET Core
Sources
Also known as BELL-CVE-2024-21386, BIT-aspnet-core-2024-21386, CLEANSTART-2025-QC74254, GHSA-g74q-5xw3-j7q9, UBUNTU-CVE-2024-21386.