CVE-2026-32175 .NET Core Tampering Vulnerability
An attacker can write arbitrary files to limited locations on a system by sending a specially crafted file to the .NET Core runtime.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-32175?
CVE-2026-32175 is a medium-severity path traversal vulnerability in Microsoft .Net, published on 12 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A tampering vulnerability exists when .NET Core improperly handles specially crafted files. An attacker who successfully exploited this vulnerability could write arbitrary files and directories to certain locations on a vulnerable system. However, an attacker would have limited control over the destination of the files and directories. To exploit the vulnerability, an attacker must send a specially crafted file to a vulnerable system. The security update fixes the vulnerability by ensuring .NET Core properly handles files.
Which versions are affected by CVE-2026-32175?
26 open source packages ship an affected version, including Microsoft.NetCore.App.Runtime.win-arm, dotnet and dotnet-sdk. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.NetCore.App.Runtime.win-arm NuGet | From 10.0.0 | 10.0.8 |
Microsoft.NetCore.App.Runtime.win-arm NuGet | From 10.0.0 | 10.0.8 |
Microsoft.NetCore.App.Runtime.win-arm NuGet | From 8.0.0 | 8.0.27 |
Microsoft.NetCore.App.Runtime.win-arm NuGet | From 8.0.0 | 8.0.27 |
Microsoft.NetCore.App.Runtime.win-arm NuGet | From 9.0.0 | 9.0.16 |
Microsoft.NetCore.App.Runtime.win-arm NuGet | From 9.0.0 | 9.0.16 |
20 more packages
dotnet Bitnami | From 8.0.0 | 8.0.27, 9.0.16 |
dotnet-sdk Bitnami | From 8.0.0 | 8.0.27, 9.0.16 |
Microsoft.NetCore.App.Runtime.win-arm64 NuGet | From 10.0.0 | 10.0.8 |
Microsoft.NetCore.App.Runtime.win-arm64 NuGet | From 10.0.0 | 10.0.8 |
Microsoft.NetCore.App.Runtime.win-arm64 NuGet | From 8.0.0 | 8.0.27 |
Microsoft.NetCore.App.Runtime.win-arm64 NuGet | From 8.0.0 | 8.0.27 |
Microsoft.NetCore.App.Runtime.win-arm64 NuGet | From 9.0.0 | 9.0.16 |
Microsoft.NetCore.App.Runtime.win-arm64 NuGet | From 9.0.0 | 9.0.16 |
Microsoft.NetCore.App.Runtime.win-x64 NuGet | From 10.0.0 | 10.0.8 |
Microsoft.NetCore.App.Runtime.win-x64 NuGet | From 10.0.0 | 10.0.8 |
Microsoft.NetCore.App.Runtime.win-x64 NuGet | From 8.0.0 | 8.0.27 |
Microsoft.NetCore.App.Runtime.win-x64 NuGet | From 8.0.0 | 8.0.27 |
Microsoft.NetCore.App.Runtime.win-x64 NuGet | From 9.0.0 | 9.0.16 |
Microsoft.NetCore.App.Runtime.win-x64 NuGet | From 9.0.0 | 9.0.16 |
Microsoft.NetCore.App.Runtime.win-x86 NuGet | From 10.0.0 | 10.0.8 |
Microsoft.NetCore.App.Runtime.win-x86 NuGet | From 10.0.0 | 10.0.8 |
Microsoft.NetCore.App.Runtime.win-x86 NuGet | From 8.0.0 | 8.0.27 |
Microsoft.NetCore.App.Runtime.win-x86 NuGet | From 8.0.0 | 8.0.27 |
Microsoft.NetCore.App.Runtime.win-x86 NuGet | From 9.0.0 | 9.0.16 |
Microsoft.NetCore.App.Runtime.win-x86 NuGet | From 9.0.0 | 9.0.16 |
Products include Microsoft .Net, Microsoft Visual Studio 2022, Microsoft Visual Studio 2026.
How do I fix CVE-2026-32175?
Upgrade Microsoft.NetCore.App.Runtime.win-arm to a fixed version for your release line: 10.0.8, 8.0.27 or 9.0.16.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-32175 being exploited?
There is no known exploitation of CVE-2026-32175 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 BELL-CVE-2026-32175, BIT-dotnet-2026-32175, BIT-dotnet-sdk-2026-32175, GHSA-rg75-q538-x34v, MINI-87r8-jwjx-3whx, MINI-j55f-j6xx-7hcv and 1 more.