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

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, Microsoft.NetCore.App.Runtime.win-arm64 (NuGet), Microsoft.NetCore.App.Runtime.win-x64 (NuGet), Microsoft.NetCore.App.Runtime.win-x86 (NuGet). Vendors: Microsoft, 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
    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
    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
    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

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