CVE-2015-6112

MediumCVSS 5.8/10Last modified Jun 17, 2026

Description

SChannel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 lacks the required extended master-secret binding support to ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation, which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a "triple handshake attack," aka "Schannel TLS Triple Handshake Vulnerability."

Metrics

CVSS 2.0 5.8/10AV:N/AC:M/Au:N/C:P/I:P/A:N

Weakness enumeration

CWE-20 CWE-310

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://www.securitytracker.com/id/1034124Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-121Patch, Vendor Advisory
http://www.securitytracker.com/id/1034124Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-121Patch, Vendor Advisory

Timeline

Published: Nov 11, 2015
Last modified: Jun 17, 2026
NVD status: Modified

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