Affected: Microsoft .NET 10.0, Microsoft .NET 8.0, Microsoft .NET 9.0, Microsoft Visual Studio 2022 version 17.12, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.7

Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

Affected: Ubuntu:22.04:LTS: dotnet8, Ubuntu:24.04:LTS: dotnet10, Ubuntu:24.04:LTS: dotnet8, Ubuntu:26.04:LTS: dotnet10

Artur Stetsko discovered that the .NET did not properly validate authentication data. An attacker could possibly use this issue to elevate privileges. (CVE-2026-47300)

Levi Broderick discovered that .NET did not properly handle XML encryption during parsing. An attacker could possibly use this issue to consume excessive resources, resulting in a denial of service. (CVE-2026-47302)

Pham Quang Minh discovered that .NET did not properly parse authentication data. An attacker could possibly use this issue to bypass authentication and elevate privileges. (CVE-2026-47303)

Levi Broderick discovered that .NET did not properly verify cryptographic signatures during XML encryption. An attacker could possibly use this issue to bypass security features over a network and access encrypted data. (CVE-2026-47304)

It was discovered that .NET did not properly validate input during TLS handshakes. An attacker could possibly use this issue to cause .NET to crash, resulting in a denial of service. (CVE-2026-50524)

Levi Broderick discovered that .NET did not properly handle resource allocation during XML encryption. An attacker could possibly use this issue to consume excessive resources, resulting in a denial of service. (CVE-2026-50525)

Siwei Li discovered that .NET did not properly handle link resolution before file access during the container image build process. A local attacker could possibly use this issue to inject resources that could be incorporated into container images built by…