Microsoft Security Advisory CVE-2025-21176 | .NET and Visual Studio Remote Code Execution Vulnerability
Date: 2025-01
Affected: nuget/Microsoft.NetCore.App.Runtime.win-x86, nuget/Microsoft.NetCore.App.Runtime.win-x64, nuget/Microsoft.NetCore.App.Runtime.win-arm64
Attack vector: rce
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2025-21176
CWE: CWE-126
CVSS: 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

# Microsoft Security Advisory CVE-2025-21176 | .NET and Visual Studio Remote Code Execution Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 8.0 and .NET 9.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. An attacker could exploit this vulnerability by loading a specially crafted file in Visual Studio. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/runtime/issues/111425 ## <a name="mitigation-factors"></a>Mitigation factors Microsoft has not identified any mitigating factors for this vulnerability. ## <a name="affected-software"></a>Affected software * Any .NET 8.0 application running on .NET 8.0.11 or earlier. * Any .NET 9.0 application running on .NET 9.0.0 or earlier. ## <a name="affected-packages"></a>Affected Packages The vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below ### <a name=".NET 9"></a>.NET 9 Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- [Microsoft.NetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm) | >= 9.0.0, < 9.0.1 | 9.0.1 [Microsoft.NetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm6


Mitigations:

Architectural layers (MAESTRO):