CVE-2026-70197HighCVSS 8.1

.NET and Visual Studio Remote Code Execution Vulnerability

Published
October 13, 2026
Last Modified
—

🔗 CVE IDs covered (1)

📋 Description

Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.

🎯 Affected products21

  • .NET 10.0 installed on Linux
  • .NET 10.0 installed on Mac OS
  • .NET 10.0 installed on Windows
  • .NET 10.0 runtime installed on Windows
  • .NET 11.0 installed on Linux
  • .NET 11.0 installed on Mac OS
  • .NET 11.0 installed on Windows
  • .NET 11.0 runtime installed on Windows
  • .NET 8.0 installed on Linux
  • .NET 8.0 installed on Mac OS
  • .NET 8.0 installed on Windows
  • .NET 8.0 runtime installed on Windows
  • .NET 9.0 installed on Linux
  • .NET 9.0 installed on Mac OS
  • .NET 9.0 installed on Windows
  • .NET 9.0 runtime 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

✅ Remediation

KBRelease Notes (Security Update) — fixed build 18.10.4 KBRelease Notes (Security Update) — fixed build 17.14.43 KB5130036 (Security Update) — fixed build 10.0.13 KB5130034 (Security Update) — fixed build 8.0.32 KB5130035 (Security Update) — fixed build 9.0.21 KBRelease Notes (Security Update) — fixed build 11.0.0-rc.2 KB5133964 (Security Update) — fixed build 8.0.427 KB5133965 (Security Update) — fixed build 9.0.320 KB5133966 (Security Update) — fixed build 10.0.403 KBRelease Notes (Security Update) — fixed build 11.0.100-rc.3.26522.148 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 (20)