radexecd.exe in Persistent Systems Radia Client Automation (RCA) 7.9, 8.1, 9.0, and 9.1 allows remote attackers to execute arbitrary commands via a crafted request to TCP port 3465.
https://www.exploit-db.com/exploits/40491/
http://www.zerodayinitiative.com/advisories/ZDI-15-038/