Microsoft Windows Server 2008 R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allow local users to gain privileges via a crafted application that leverages incorrect impersonation handling in a process that uses the SeAssignPrimaryTokenPrivilege privilege, aka "Windows Create Process Elevation of Privilege Vulnerability."
https://exchange.xforce.ibmcloud.com/vulnerabilities/100438
https://exchange.xforce.ibmcloud.com/vulnerabilities/100437
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-015
http://www.securitytracker.com/id/1031724