Untrusted search path vulnerability in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1, Windows Server 2012 R2, and Windows RT 8.1 allows local users to gain privileges via a Trojan horse DLL in the current working directory, aka "Windows DLL Remote Code Execution Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-069