CVE-2017-8495

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.0 7.5/10CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-287

Affected software

Vendor	Product	Versions
Microsoft Corporation	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.	Microsoft Windows

References

http://www.securityfocus.com/bid/99424Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038862Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8495Patch, Vendor Advisory
https://www.orpheus-lyre.info/Third Party Advisory
http://www.securityfocus.com/bid/99424Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038862Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8495Patch, Vendor Advisory
https://www.orpheus-lyre.info/Third Party Advisory

Timeline

Published: Jul 11, 2017
Last modified: Jun 17, 2026
NVD status: Modified

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