Issues

• [API Proposal]: Annotate MemoryExtensions.Sort using TComparer with allows ref struct

  api-suggestionarea-System.Collectionsuntriaged
  dotnet/runtime#135755 · Filter by author hexawyz opened on Oct 14, 2026
  1

• [browser][coreclr] Integrate R2R debug info flags into WebAssembly SDK

  arch-wasmarea-Build-monoos-browser
  dotnet/runtime#135754 · Filter by author maraf opened on Oct 14, 2026 · 12.0.0
  1

  

• ILVerify: conformance target — ECMA-335, CoreCLR behaviour, or both?

  area-Tools-ILVerificationuntriaged
  dotnet/runtime#135747 · Filter by author pcshrosbree opened on Oct 14, 2026
  2

• Guidance for unions with data-less cases: JsonUnionTypeStructuralClassifier cannot classify them

  area-System.Text.Jsonuntriaged
  dotnet/runtime#135742 · Filter by author robertodalmonte opened on Oct 14, 2026
  1

• Runtime async has major perf regression since .NET 11 RC2

  area-System.Threading.Tasksruntime-asynctenet-performanceuntriaged
  dotnet/runtime#135738 · Filter by author hez2010 opened on Oct 14, 2026
  2

• NATIVE_DLL_SEARCH_DIRECTORIES doesn't support paths containing :

  area-Hostuntriaged
  dotnet/runtime#135737 · Filter by author PeanutButter233333 opened on Oct 14, 2026

• Test failure: System.Net.NetworkInformation.Tests.PingTest.SendPingWithIPAddress

  area-System.Netblocking-clean-ci-optionalKnown Build Erroruntriaged
  dotnet/runtime#135736 · Filter by author VincentBu opened on Oct 14, 2026
  1

• Test failure: System.Net.NetworkInformation.Tests.UnixPingUtilityTests.PacketSizeIsRespected

  area-System.Netblocking-clean-ci-optionalKnown Build Erroruntriaged
  dotnet/runtime#135735 · Filter by author VincentBu opened on Oct 14, 2026
  1

• Verify COSE against RFC 9964, then remove Experimental

  area-System.Security
  dotnet/runtime#135729 · Filter by author bartonjs opened on Oct 13, 2026 · 12.0.0
  1

• TensorExtensionsSpanInSpanOut<Single> test failure

  area-System.Numerics.Tensorsblocking-clean-ciKnown Build Erroruntriaged
  dotnet/runtime#135718 · Filter by author jkotas opened on Oct 13, 2026
  2

• Build race condition while building helperildll.dll

  area-ReadyToRunblocking-clean-ciKnown Build Erroruntriaged
  dotnet/runtime#135717 · Filter by author jkotas opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-96960 | .NET and Visual Studio Denial of Service Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135711 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-96959 | .NET and Visual Studio Denial of Service Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135710 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-96958 | .NET and Visual Studio Denial of Service Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135709 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-96233 | .NET and Visual Studio Denial of Service Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135708 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-96231 | .NET and Visual Studio Elevation of Privilege Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135707 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-96225 | .NET and Visual Studio Elevation of Privilege Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135706 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-96222 | .NET Spoofing Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135705 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-85790 | .NET Information Disclosure Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135704 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-84008 | .NET Denial of Service Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135703 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-70197 | .NET and Visual Studio Remote Code Execution Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135702 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-70194 | .NET and Visual Studio Security Feature Bypass Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135701 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-70162 | .NET Denial of Service Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135699 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-69651 | .NET and Visual Studio Denial of Service Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135698 · Filter by author bribrothers opened on Oct 13, 2026
  2

• Microsoft Security Advisory CVE-2026-66822 | .NET and Visual Studio Information Disclosure Vulnerability

  area-MetaSecurityuntriaged
  dotnet/runtime#135697 · Filter by author bribrothers opened on Oct 13, 2026
  2