CVE-2018-8340
A security feature bypass vulnerability exists when Active Directory Federation Services (AD FS) improperly handles multi-factor authentication requests, aka "AD FS Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows Server 2012 R2, Windows 10 Servers.
Date published : 2018-08-15
http://www.securityfocus.com/bid/105029
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8340