CVE-2026-102870HighCVSS 8.8
ASP.NET Core Remote Code Execution Vulnerability
🔗 CVE IDs covered (1)
📋 Description
Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.
🎯 Affected products19
- .NET 10.0 installed on Linux
- .NET 10.0 installed on Mac OS
- .NET 10.0 installed on Windows
- .NET 11.0 installed on Linux
- .NET 11.0 installed on Mac OS
- .NET 11.0 installed on Windows
- Microsoft Visual Studio 2019 version 16.11
- Microsoft Visual Studio 2022 version 17.14
- Microsoft Visual Studio 2026 version 18.10
- Microsoft Visual Studio 2026 version 18.11
- Microsoft Visual Studio 2026 version 18.12
- Microsoft.AspNetCore.Components.WebAssembly.DevServer
- Microsoft.AspNetCore.Components.WebAssembly.Server
- Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 10.0 runtime installed on Linux
- Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 10.0 runtime installed on Mac OS
- Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 10.0 runtime installed on Windows
- Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 11.0 runtime installed on Linux
- Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 11.0 runtime installed on Mac OS
- Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 11.0 runtime installed on Windows
✅ Remediation
KBRelease Notes (Security Update) — fixed build 18.10.4 KBRelease Notes (Security Update) — fixed build 17.14.43 KBRelease Notes (Security Update) — fixed build 10.0.13 KBRelease Notes (Security Update) — fixed build 11.0.0-rc.2.26478.115 KB5133966 (Security Update) — fixed build 10.0.14 KB5133966 (Security Update) — fixed build 10.0.403 KBRelease Notes (Security Update) — fixed build 11.0.100-rc.3 KBRelease Notes (Security Update) — fixed build 16.11.61 KBRelease Notes (Security Update) — fixed build 18.11.2 KBRelease Notes (Security Update) — fixed build 18.12 Insiders 3
🔗 References (16)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102870
- patchhttps://learn.microsoft.com/en-us/visualstudio/releases/2026/release-history
- referencehttps://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes
- patchhttps://learn.microsoft.com/en-us/visualstudio/releases/2022/release-history
- referencehttps://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
- patchhttps://www.nuget.org/packages/Microsoft.AspNetCore.Components.WebAssembly.Server
- referencehttps://github.com/dotnet/announcements/issues/445
- patchhttps://www.nuget.org/packages/Microsoft.AspNetCore.Components.WebAssembly.Server/10.0.14
- referencehttps://support.microsoft.com/help/5133966
- patchhttps://www.nuget.org/packages/Microsoft.AspNetCore.Components.WebAssembly.DevServer/10.0.14
- patchhttps://dotnet.microsoft.com/download/dotnet/10.0
- patchhttps://dotnet.microsoft.com/download/dotnet/11.0
- referencehttps://github.com/dotnet/core/blob/main/release-notes/11.0/preview/rc3/11.0.0-rc.3.md
- patchhttps://learn.microsoft.com/en-us/visualstudio/releases/2019/release-history
- referencehttps://learn.microsoft.com/en-us/visualstudio/releases/2019/release-notes
- referencehttps://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes-insiders