# Microsoft Visual Studio heap-based buffer overflow

Source: https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-6a4b9d28  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-11  
License: CC BY 4.0 with a link back

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

Visual Studio, a development platform used by programmers to write and test software, contains a heap-based buffer overflow vulnerability that could allow an attacker to execute arbitrary code remotely over a network. An attacker can exploit this with user interaction to achieve complete compromise of the affected system, including data theft, system modification, and denial of service.

Technologies: [Microsoft Visual Studio](https://junglewise.ai/threats/technologies/visual-studio), [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 This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** High severity, with a CVSS score of 8.8, published 10 November 2026.

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

**Is there a fix for This vulnerability?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is This vulnerability attacked?** It is attacked over the network.

**Am I affected?** Check whether you run Microsoft Visual Studio or Microsoft.NetCore.App.Runtime.win-x86 (NuGet) 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.

## Technical details

A heap-based buffer overflow in Visual Studio allows remote code execution when user interaction occurs. The attack vector is network-based with no privilege requirement but requires user interaction. This is a CWE-122 buffer overflow that permits arbitrary code execution with full system impact.

## Affected products

- Microsoft Visual Studio

## Timeline

- 2026-11-10: disclosed

## Related threats

- [Microsoft Visual Studio heap buffer overflow RCE](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-224be73b)
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