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CVE-2026-96222

Microsoft Security Advisory CVE-2026-96222 - .NET Spoofing Vulnerability

A spoofing vulnerability in System.Security.Cryptography.Xml allows serialized certificates with attacker-controlled chain metadata to be accepted, enabling certificate forgery and token spoofing. Mitigation requires updating .NET runtimes, SDKs, and affected package references.

.NET (NuGet)

system.security.cryptography.xml

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