Out-of-bounds Write Affecting microsoft.netcore.app.runtime.win-x64 package, versions [8.0.0,8.0.32)[9.0.0,9.0.21)[10.0.0,10.0.13)[11.0.0-preview.1,11.0.0-rc.2)
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.
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Test your applications- Snyk IDSNYK-DOTNET-MICROSOFTNETCOREAPPRUNTIMEWINX64-20936744
- published14 Oct 2026
- disclosed13 Oct 2026
- creditUnknown
Introduced: 13 Oct 2026
NewCVE-2026-70197 (opens in a new tab)How to fix?
Upgrade Microsoft.NETCore.App.Runtime.win-x64 to version 8.0.32, 9.0.21, 10.0.13, 11.0.0-rc.2 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write via the ReceiveFromAsync process when a SocketAsyncEventArgs instance is reused across IPv4 and IPv6 datagram sockets, which can retain an undersized cached native address buffer. An attacker can achieve remote code execution by sending specially crafted network packets that trigger an out-of-bounds write.