CVE-2026-102870HighCVSS 8.8

ASP.NET Core Remote Code Execution Vulnerability

Published
October 13, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2026-102870 →

📋 Description

Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.

🎯 Affected products8

  • Microsoft Visual Studio 2022 version 17.14
  • Microsoft Visual Studio 2026 version 18.10
  • Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 10.0 installed on Linux
  • Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 10.0 installed on Mac OS
  • Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 10.0 installed on Windows
  • Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 11.0 installed on Linux
  • Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 11.0 installed on Mac OS
  • Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 11.0 installed on Windows

✅ Remediation

KBRelease Notes (Security Update) — fixed build 18.10.4 KBRelease Notes (Security Update) — fixed build 17.14.42 KBRelease Notes (Security Update) — fixed build 10.0.13 KBRelease Notes (Security Update) — fixed build 11.0.0-rc.2.26478.115

🔗 References (2)