The Hacker News

Microsoft Patches Critical ASP.NET Core CVE-2026-40372 Privilege Escalation Bug

"A regression in the Microsoft.AspNetCore.DataProtection 10.0.0-10.0.6 NuGet packages cause the managed authenticated ...

Microsoft releases emergency patches for critical ASP.NET flaw

Microsoft has released out-of-band (OOB) security updates to patch a critical ASP.NET Core privilege escalation vulnerability ...

Microsoft issues emergency update for macOS and Linux ASP.NET threat

Microsoft describes ASP.NET Core as a “high-performance” Web development framework for writing .Net apps that run on Windows, ...
InfoWorld

Microsoft announces end of support for ASP.NET Core 2.3

Microsoft will stop providing security patches, bug fixes, and technical support for ASP.NET Core 2.3 on April 7, 2027.
CSOonline

Microsoft issues out-of-band patch for critical security flaw in update to ASP.NET Core

Patching is not enough: applications embedding the insecure library will need to be rebuilt, and affected tokens and cookies ...
Bleeping Computer

Microsoft fixes highest-severity ASP.NET Core flaw ever

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 ...