InfoQ - ASP.NET Core - News https://www.infoq.com InfoQ ASP.NET Core News feed Microsoft Patches Critical ASP.NET Core Vulnerability with 9.9 Severity Score https://www.infoq.com/news/2025/11/dotnet-request-smuggling/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=ASP.NET+Core-news <img src="https://res.infoq.com/news/2025/11/dotnet-request-smuggling/en/headerimage/generatedHeaderImage-1762635637772.jpg"/><p>Microsoft recently released a security advisory and patched a critical vulnerability in ASP.NET Core that allows an attacker to bypass a security feature over a network due to an inconsistent interpretation of HTTP requests. With a CVSS score of 9.9 out of 10, CVE-2025-55315 is the highest-rated Microsoft vulnerability.</p> <i>By Renato Losio</i> .NET 6 ASP.NET Core .NET 10 .NET 8 .NET 9 .NET Development news Wed, 12 Nov 2025 10:26:00 GMT https://www.infoq.com/news/2025/11/dotnet-request-smuggling/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=ASP.NET+Core-news Renato Losio 2025-11-12T10:26:00Z /news/2025/11/dotnet-request-smuggling/en