CVE-2023-33126 .NET and Visual Studio Remote Code Execution Vulnerability
Attackers can execute arbitrary code via a vulnerability in Microsoft .NET and Visual Studio, requiring immediate patching by developers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-33126?
CVE-2023-33126 is a high-severity code injection vulnerability in Microsoft .Net, published on 13 Jun 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
.NET and Visual Studio Remote Code Execution Vulnerability
Which versions are affected by CVE-2023-33126?
18 open source packages ship an affected version, including Microsoft.NetCore.App.Runtime.win-arm, dotnet and dotnet-sdk. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.NetCore.App.Runtime.win-arm NuGet | From 6.0.0 | 6.0.18 |
Microsoft.NetCore.App.Runtime.win-arm NuGet | From 6.0.0 | 6.0.18 |
Microsoft.NetCore.App.Runtime.win-arm NuGet | From 7.0.0 | 7.0.7 |
Microsoft.NetCore.App.Runtime.win-arm NuGet | From 7.0.0 | 7.0.7 |
dotnet Bitnami | From 6.0.0 | 6.0.18, 7.0.7 |
dotnet-sdk Bitnami | From 6.0.0 | 6.0.18, 7.0.7 |
12 more packages
Microsoft.NetCore.App.Runtime.win-arm64 NuGet | From 6.0.0 | 6.0.18 |
Microsoft.NetCore.App.Runtime.win-arm64 NuGet | From 6.0.0 | 6.0.18 |
Microsoft.NetCore.App.Runtime.win-arm64 NuGet | From 7.0.0 | 7.0.7 |
Microsoft.NetCore.App.Runtime.win-arm64 NuGet | From 7.0.0 | 7.0.7 |
Microsoft.NetCore.App.Runtime.win-x64 NuGet | From 6.0.0 | 6.0.18 |
Microsoft.NetCore.App.Runtime.win-x64 NuGet | From 6.0.0 | 6.0.18 |
Microsoft.NetCore.App.Runtime.win-x64 NuGet | From 7.0.0 | 7.0.7 |
Microsoft.NetCore.App.Runtime.win-x64 NuGet | From 7.0.0 | 7.0.7 |
Microsoft.NetCore.App.Runtime.win-x86 NuGet | From 6.0.0 | 6.0.18 |
Microsoft.NetCore.App.Runtime.win-x86 NuGet | From 6.0.0 | 6.0.18 |
Microsoft.NetCore.App.Runtime.win-x86 NuGet | From 7.0.0 | 7.0.7 |
Microsoft.NetCore.App.Runtime.win-x86 NuGet | From 7.0.0 | 7.0.7 |
Products include Microsoft .Net, Microsoft Visual Studio 2022.
How do I fix CVE-2023-33126?
Upgrade Microsoft.NetCore.App.Runtime.win-arm to a fixed version for your release line: 6.0.18 or 7.0.7.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2023-33126 being exploited?
There is no known exploitation of CVE-2023-33126 in the wild and no public exploit code.
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-dotnet-2023-33126, BIT-dotnet-sdk-2023-33126, CLEANSTART-2025-DJ87385, GHSA-gh24-9qjj-mr67.