Wibu-Systems CodeMeter Runtime before 5.20 uses weak permissions (read and write access for all users) for codemeter.exe, which allows local users to gain privileges via a Trojan horse file.
http://www.securityfocus.com/archive/1/534079/100/0/threaded
http://packetstormsecurity.com/files/129234/CodeMeter-Weak-Service-Permissions.html