CVE-2017-8495: Microsoft Windows 10

High severity, CVSS 7.5. EPSS: 4.6% chance of exploitation in the next 30 days.

Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an attacker to bypass Extended Protection for Authentication when Kerberos fails to prevent tampering with the SNAME field during ticket exchange, aka "Kerberos SNAME Security Feature Bypass Vulnerability" or Orpheus' Lyre.

Affected products

• Microsoft Windows 10: affected versions not specified; version 1511 only; version 1607 only; version 1703 only
• Microsoft Windows 7: any version
• Microsoft Windows 8.1: any version
• Microsoft Windows Rt 8.1: any version
• Microsoft Windows Server 2008: any version; version r2 only
• Microsoft Windows Server 2012: any version; version r2 only
• Microsoft Windows Server 2016: any version

Published 2017-07-11. Last modified 2026-06-17.