# CVE-2026-114151: Microsoft Visual Studio insecure deserialization code execution

Source: https://junglewise.ai/threats/cve-2026-114151-deserialization-of-untrusted-data-in-visual-studio-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-114151 · Severity: high · CVSS 8.8 · Published 2026-11-10

Visual Studio, a development environment used by software engineers to write and test code, contains a vulnerability allowing attackers to run malicious code remotely on a developer's machine over a network. An attacker could exploit this to compromise source code, steal intellectual property, or establish a foothold for further attacks on the organization's infrastructure.

Technologies: [Microsoft Visual Studio](https://junglewise.ai/threats/technologies/visual-studio), [Microsoft.NetCore.App.Runtime.win-arm64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-win-arm64), [Microsoft.NetCore.App.Runtime.win-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-win-x64), [Microsoft.NetCore.App.Runtime.win-x86 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-win-x86). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft), [NuGet](https://junglewise.ai/threats/vendors/nuget).

## Quick answers

**Is CVE-2026-114151 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-114151 being exploited in the wild.

**How severe is CVE-2026-114151?** High severity, with a CVSS score of 8.8, published 10 November 2026.

**Which products and versions are affected?** Microsoft.NetCore.App.Runtime.win-arm64 (NuGet) >= 8.0.0, < 8.0.34, ECOSYSTEM:introduced=8.0.0,fixed=8.0.34; Microsoft.NetCore.App.Runtime.win-x64 (NuGet) >= 8.0.0, < 8.0.34, ECOSYSTEM:introduced=8.0.0,fixed=8.0.34; Microsoft.NetCore.App.Runtime.win-x86 (NuGet) >= 8.0.0, < 8.0.34, ECOSYSTEM:introduced=8.0.0,fixed=8.0.34.

**Is there a fix for CVE-2026-114151?** Yes. Microsoft.NetCore.App.Runtime.win-arm64 (NuGet): upgrade to 8.0.34 or later; Microsoft.NetCore.App.Runtime.win-x64 (NuGet): upgrade to 8.0.34 or later; Microsoft.NetCore.App.Runtime.win-x86 (NuGet): upgrade to 8.0.34 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-114151 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-114151?** Check whether you run Microsoft Visual Studio, Microsoft.NetCore.App.Runtime.win-arm64 (NuGet), Microsoft.NetCore.App.Runtime.win-x64 (NuGet) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Microsoft.NetCore.App.Runtime.win-arm64 (NuGet): upgrade to 8.0.34 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.win-arm64 --version 8.0.34
  ```

- Microsoft.NetCore.App.Runtime.win-x64 (NuGet): upgrade to 8.0.34 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.win-x64 --version 8.0.34
  ```

- Microsoft.NetCore.App.Runtime.win-x86 (NuGet): upgrade to 8.0.34 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.win-x86 --version 8.0.34
  ```


## Technical details

The vulnerability is a deserialization of untrusted data flaw in Visual Studio that permits remote code execution. An attacker with network access can send a crafted serialized object to trigger arbitrary code execution on the affected system without requiring authentication or user interaction beyond the normal operation of the application.

## Affected products

- Microsoft Visual Studio

## Identifiers

- CVE-2026-114151
- GHSA-fpxj-5c99-g7vj

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-114151](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-114151)

## Related threats

- [Microsoft Visual Studio heap buffer overflow RCE](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-224be73b)
- [Microsoft Visual Studio heap-based buffer overflow](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-6a4b9d28)
- [Microsoft Visual Studio deserialization remote code execution](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-1eb2f932)
- [Microsoft Visual Studio heap-based buffer overflow](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-ba83a5c9)
- [Microsoft Visual Studio stack-based buffer overflow](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-d956164d)