ASP.NET Core Security Feature Bypass Vulnerability
Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely CVE-2026-114156 · score 6.5/10
What could go wrong?
A protection that normally blocks attacks could be switched off or skipped.
How urgent is it?
Check Microsoft’s page for details.
Who is affected?
.NET 11.0 installed on Windows, .NET 11.0 installed on Linux, .NET 11.0 installed on Mac OS, Microsoft Visual Studio 2026 version 18.12
What should I do?
Install this month’s updates via Windows Update, Intune or your update tool, then restart.
Known problems
Microsoft lists known issues per update: no KB article listed. Official page.