cve-2025-21193

CVE-2025-21193 is a critical security vulnerability in Microsoft's Active Directory Federation Services (AD FS), classified as a spoofing flaw. This tag covers discussions about the advisory released by Microsoft in January 2025, explaining the nature of the vulnerability and its implications for enterprise administrators and Windows users. Recurring themes include understanding the attack vector, assessing the risk to federated identity systems, and exploring mitigation steps such as applying security updates. The content focuses on the technical details of the spoofing vulnerability and practical guidance for securing AD FS deployments against potential exploitation.