NET 11 Preview 4 delivers a broad set of developer-facing updates across .NET MAUI, ASP.NET Core, Blazor, Entity Framework Core, the SDK, libraries and runtime performance work.

The fourth preview brings new methods to existing classes in the .NET base class library and a new configuration file for ...

Microsoft released an emergency patch for its ASP.NET Core to fix a high-severity vulnerability that allows unauthenticated attackers to gain SYSTEM privileges on devices that use the Web development ...

Microsoft has released out-of-band (OOB) security updates to patch a critical ASP.NET Core privilege escalation vulnerability. The security flaw (tracked as CVE-2026-40372) was found in the ASP.NET ...

.NET forms a core part of Windows and other operating systems, as many applications use this platform to run across billions of devices. Microsoft concurrently supports multiple versions of .NET and ...

Microsoft has released out-of-band updates to address a security vulnerability in ASP.NET Core that could allow an attacker to escalate privileges. The vulnerability, tracked as CVE-2026-40372, ...

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Earlier this week, Microsoft patched a vulnerability that was flagged with the "highest ever" severity rating received by an ASP.NET Core security flaw. This HTTP request smuggling bug (CVE-2025-55315 ...

The Kestrel web server flaw allows request smuggling attacks, but the actual risk depends on the application code and deployment. Microsoft has patched a critical vulnerability in ASP.NET Core that ...