Untrusted search path vulnerability in Google Earth 5.1.3535.3218 allows local users, and possibly remote attackers, to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse quserex.dll that is located in the same folder as a .kmz file.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7553