Heap-based Buffer Overflow Affecting microsoft.netcore.app.runtime.win-x86 package, versions [8.0.0-preview.1.23110.8,8.0.34)[9.0.0-preview.1.24080.9,9.0.23)[10.0.0-preview.1.25080.5,10.0.15)[11.0.0-preview.1.26104.118,11.0.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DOTNET-MICROSOFTNETCOREAPPRUNTIMEWINX86-22412164
- published11 Nov 2026
- disclosed9 Nov 2026
- credith4urek
Introduced: 9 Nov 2026
NewCVE-2026-114159 (opens in a new tab)How to fix?
Upgrade Microsoft.NETCore.App.Runtime.win-x86 to version 8.0.34, 9.0.23, 10.0.15, 11.0.0 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow when its native reader initializes over a Portable PDB that contains an oversized document name, whose length is truncated during allocation so the buffer is smaller than the data written into it. An attacker can achieve code execution by getting a victim to process an attacker-supplied Portable PDB, including through the Windows .NET runtime's native stack-trace reader fallback.