CVE-2023-36558 ASP.NET Core Security Feature Bypass Vulnerability
An attacker can bypass security features in ASP.NET Core, potentially undermining application protections.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-36558?
CVE-2023-36558 is a medium-severity vulnerability in Microsoft .Net, published on 14 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ASP.NET Core Security Feature Bypass Vulnerability
Which versions are affected by CVE-2023-36558?
9 open source packages ship an affected version, including Microsoft.AspNetCore.Components, aspnet-core and dotnet. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.AspNetCore.Components NuGet | From 6.0.0 | 6.0.25 |
Microsoft.AspNetCore.Components NuGet | From 6.0.0 | 6.0.25 |
Microsoft.AspNetCore.Components NuGet | From 7.0.0 | 7.0.14 |
Microsoft.AspNetCore.Components NuGet | From 7.0.0 | 7.0.14 |
Microsoft.AspNetCore.Components NuGet | From 8.0.0-rc.2.23480.2 | 8.0.0 |
Microsoft.AspNetCore.Components NuGet | From 8.0.0-rc.2.23480.2 | 8.0.0 |
3 more packages
aspnet-core Bitnami | From 6.0.0 | 6.0.25, 7.0.14, 8.0.1 |
dotnet Bitnami | From 6.0.0 | 6.0.25, 7.0.14 |
dotnet-sdk Bitnami | From 6.0.0 | 6.0.25, 7.0.14 |
Products include Microsoft .Net, Microsoft Asp.net Core, Microsoft Visual Studio 2022.
How do I fix CVE-2023-36558?
Upgrade Microsoft.AspNetCore.Components to a fixed version for your release line: 6.0.25, 7.0.14 or 8.0.0.
Is CVE-2023-36558 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-36558 exists.
Other vulnerabilities in Microsoft .Net
- CVE-2024-43498 .NET and Visual Studio Remote Code Execution Vulnerability
- CVE-2024-0057 NET, .NET Framework, and Visual Studio Security Feature Bypass Vulnerability
- CVE-2026-96957 .NET Security Feature Bypass Vulnerability
- CVE-2026-69439 .NET and Visual Studio Elevation of Privilege Vulnerability
- CVE-2026-71328 .NET and Visual Studio Remote Code Execution Vulnerability
Sources
Also known as BIT-aspnet-core-2023-36558, BIT-dotnet-2023-36558, BIT-dotnet-sdk-2023-36558, CLEANSTART-2025-XJ39887, GHSA-3fx3-85r4-8j3w, UBUNTU-CVE-2023-36558.