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critical vulnerability

Microsoft Security Advisory CVE-2026-105016 - Microsoft QUIC Remote Code Execution Vulnerability

Published Oct 13, 2026 · updated Oct 13, 2026

What to do

  1. Upgrade to a fixed version: Microsoft.Native.Quic.MsQuic.Schannel 2.5.11-ci.159417053.
  2. Redeploy and restart long-running processes so they load the fixed code.

Affected packages

Microsoft.Native.Quic.MsQuic.Schannel

= 2.5.11-ci.156755675
2.5.11-ci.159417053

Check your project: dotnet list package --include-transitive | grep -i Microsoft.Native.Quic.MsQuic.Schannel

Sources

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