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.

• http://www.securityfocus.com/bid/105029Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1041474Third Party Advisory, VDB Entry
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8340Patch, Vendor Advisory
• http://www.securityfocus.com/bid/105029Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1041474Third Party Advisory, VDB Entry
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8340Patch, Vendor Advisory

Published

Aug 15, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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