Microsoft has patched an ASP.NET Core vulnerability with a CVSS score of 9.9, which security program manager Barry Dorrans said was "our highest ever." The flaw is in the Kestrel web server component ...

Microsoft warns that attackers are deploying malware in ViewState code injection attacks using static ASP. NET machine keys found online. As Microsoft Threat Intelligence experts recently discovered, ...

Website developers are unwittingly putting their companies at risk by incorporating publicly disclosed ASP.NET machine keys from code documentation and repositories into their applications, Microsoft ...

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 ...

Microsoft Threat Intelligence has identified 3,000 ASP.NET keys disclosed in code documentation and repos that could be used in code injection attacks. Microsoft Threat Intelligence in December ...

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 ...

Patching is not enough: applications embedding the insecure library will need to be rebuilt, and affected tokens and cookies expired. Developers are advised to check their applications after Microsoft ...