ghsa-gjf6-3w4p-7xfh
Vulnerability from github
Published
2025-01-14 19:46
Modified
2025-01-14 19:46
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
Microsoft Security Advisory CVE-2025-21176 | .NET and Visual Studio Remote Code Execution Vulnerability
Details

Microsoft Security Advisory CVE-2025-21176 | .NET and Visual Studio Remote Code Execution Vulnerability

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

Mitigation factors

Microsoft has not identified any mitigating factors for this vulnerability.

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.

Affected Packages

The vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below

.NET 9

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, < 9.0.1 | 9.0.1 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, < 9.0.1 | 9.0.1

.NET 8

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, < 8.0.12 | 8.0.12 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, < 8.0.12 | 8.0.12

Advisory FAQ

How do I know if I am affected?

If you have a runtime or SDK with a version listed, or an affected package listed in affected software or affected packages, you're exposed to the vulnerability.

How do I fix the issue?

  1. To fix the issue please install the latest version of .NET 9.0 or .NET 8.0, as appropriate. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.

  2. If your application references the vulnerable package, update the package reference to the patched version.

  3. You can list the versions you have installed by running the dotnet --info command. You will see output like the following;

``` .NET SDK: Version: 9.0.100 Commit: 59db016f11 Workload version: 9.0.100-manifests.3068a692 MSBuild version: 17.12.7+5b8665660

Runtime Environment: OS Name: Mac OS X OS Version: 15.2 OS Platform: Darwin RID: osx-arm64 Base Path: /usr/local/share/dotnet/sdk/9.0.100/

.NET workloads installed: There are no installed workloads to display. Configured to use loose manifests when installing new manifests.

Host: Version: 9.0.0 Architecture: arm64 Commit: 9d5a6a9aa4

.NET SDKs installed: 9.0.100 [/usr/local/share/dotnet/sdk]

.NET runtimes installed: Microsoft.AspNetCore.App 9.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 9.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found: x64 [/usr/local/share/dotnet] registered at [/etc/dotnet/install_location_x64]

Environment variables: Not set

global.json file: Not found

Learn more: https://aka.ms/dotnet/info

Download .NET: https://aka.ms/dotnet/download ```

  • If you're using .NET 9.0, you should download and install .NET 9.0 Runtime or .NET 9.0.100 SDK (for Visual Studio 2022 v17.12 latest Preview) from https://dotnet.microsoft.com/download/dotnet-core/9.0.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If you have found a potential security issue in .NET 9.0 or .NET 8.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty.

Support

You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.

Disclaimer

The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

External Links

CVE-2025-21176

Revisions

V1.0 (January 14, 2024): Advisory published.

Show details on source website

To clipboard 

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  "aliases": [
    "CVE-2025-21176"
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  "database_specific": {
    "cwe_ids": [
      "CWE-126"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-01-14T19:46:14Z",
    "nvd_published_at": "2025-01-14T18:15:30Z",
    "severity": "HIGH"
  },
  "details": "# Microsoft Security Advisory CVE-2025-21176 | .NET and Visual Studio Remote Code Execution Vulnerability\n\n## \u003ca name=\"executive-summary\"\u003e\u003c/a\u003eExecutive summary\n\nMicrosoft 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.\n\nAn attacker could exploit this vulnerability by loading a specially crafted file in Visual Studio.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/runtime/issues/111425\n\n## \u003ca name=\"mitigation-factors\"\u003e\u003c/a\u003eMitigation factors\n\nMicrosoft has not identified any mitigating factors for this vulnerability.\n\n## \u003ca name=\"affected-software\"\u003e\u003c/a\u003eAffected software\n\n* Any .NET 8.0 application running on .NET 8.0.11 or earlier.\n* Any .NET 9.0 application running on .NET 9.0.0 or earlier.\n\n## \u003ca name=\"affected-packages\"\u003e\u003c/a\u003eAffected Packages\nThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below\n\n### \u003ca name=\".NET 9\"\u003e\u003c/a\u003e.NET 9\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.NetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm)               | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm64)           | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm)     | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm64) | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-x64)     | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-x64)               | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-arm64)               | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-x64)                   | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm)                   | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm64)               | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x64)                   | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n[Microsoft.NetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x86)                   | \u003e= 9.0.0, \u003c 9.0.1 | 9.0.1\n\n### \u003ca name=\".NET 8\"\u003e\u003c/a\u003e.NET 8\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.NetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm)               | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm64)           | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm)     | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm64) | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-x64)     | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-x64)               | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-arm64)               | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-x64)                   | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm)                   | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm64)               | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x64)                   | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n[Microsoft.NetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x86)                   | \u003e= 8.0.0, \u003c 8.0.12 | 8.0.12\n\n## Advisory FAQ\n\n### \u003ca name=\"how-affected\"\u003e\u003c/a\u003eHow do I know if I am affected?\n\nIf you have a runtime or SDK with a version listed, or an affected package listed in [affected software](#affected-packages) or [affected packages](#affected-software), you\u0027re exposed to the vulnerability.\n\n### \u003ca name=\"how-fix\"\u003e\u003c/a\u003eHow do I fix the issue?\n\n1. To fix the issue please install the latest version of .NET 9.0 or .NET 8.0, as appropriate. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET  SDKs.\n2. If your application references the vulnerable package, update the package reference to the patched version.\n\n* You can list the versions you have installed by running the `dotnet --info` command. You will see output like the following;\n\n```\n.NET SDK:\n Version:           9.0.100\n Commit:            59db016f11\n Workload version:  9.0.100-manifests.3068a692\n MSBuild version:   17.12.7+5b8665660\n\nRuntime Environment:\n OS Name:     Mac OS X\n OS Version:  15.2\n OS Platform: Darwin\n RID:         osx-arm64\n Base Path:   /usr/local/share/dotnet/sdk/9.0.100/\n\n.NET workloads installed:\nThere are no installed workloads to display.\nConfigured to use loose manifests when installing new manifests.\n\nHost:\n  Version:      9.0.0\n  Architecture: arm64\n  Commit:       9d5a6a9aa4\n\n.NET SDKs installed:\n  9.0.100 [/usr/local/share/dotnet/sdk]\n\n.NET runtimes installed:\n  Microsoft.AspNetCore.App 9.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]\n  Microsoft.NETCore.App 9.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]\n\nOther architectures found:\n  x64   [/usr/local/share/dotnet]\n    registered at [/etc/dotnet/install_location_x64]\n\nEnvironment variables:\n  Not set\n\nglobal.json file:\n  Not found\n\nLearn more:\n  https://aka.ms/dotnet/info\n\nDownload .NET:\n  https://aka.ms/dotnet/download\n```\n\n* If you\u0027re using .NET 9.0, you should download and install .NET 9.0  Runtime or .NET 9.0.100 SDK (for Visual Studio 2022 v17.12 latest Preview) from https://dotnet.microsoft.com/download/dotnet-core/9.0.\n\nOnce you have installed the updated runtime or SDK, restart your apps for the update to take effect.\n\nAdditionally, if you\u0027ve deployed [self-contained applications](https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd) targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n## Other Information\n\n### Reporting Security Issues\n\nIf you have found a potential security issue in .NET 9.0 or .NET 8.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core \u0026 .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at \u003chttps://aka.ms/corebounty\u003e.\n\n### Support\n\nYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.\n\n### Disclaimer\n\nThe information provided in this advisory is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.\n\n### External Links\n\n[CVE-2025-21176]( https://www.cve.org/CVERecord?id=CVE-2025-21176)\n\n### Revisions\n\nV1.0 (January 14, 2024): Advisory published.",
  "id": "GHSA-gjf6-3w4p-7xfh",
  "modified": "2025-01-14T19:46:14Z",
  "published": "2025-01-14T19:46:14Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/dotnet/runtime/security/advisories/GHSA-gjf6-3w4p-7xfh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21176"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/dotnet/runtime"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Microsoft Security Advisory CVE-2025-21176 | .NET and Visual Studio Remote Code Execution Vulnerability"
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.