PCProtect Anti-Virus v4.8.35 has "Everyone: (F)" permission for %PROGRAMFILES(X86)%\PCProtect, which allows local users to gain privileges by replacing an executable file with a Trojan horse.
https://www.exploit-db.com/exploits/45503/
https://packetstormsecurity.com/files/149581/PCProtect-4-8.35-Privilege-Escalation.html