CVE-2017-0159: Microsoft Windows 10

Low severity, CVSS 3.7. EPSS: 3.6% chance of exploitation in the next 30 days.

A security feature bypass vulnerability exists in Windows 10 1607, Windows Server 2012 R2, and Windows 2016 when ADFS incorrectly treats requests coming from Extranet clients as Intranet requests, aka "ADFS Security Feature Bypass Vulnerability."

Affected products

• Microsoft Windows 10: version 1607 only; version 1703 only
• Microsoft Windows Server 2012: version r2 only
• Microsoft Windows Server 2016: any version

Published 2017-04-12. Last modified 2026-06-17.