Zoho ManageEngine OpManager Stable build before 125203 (and Released build before 125233) allows Remote Code Execution via the Smart Update Manager (SUM) servlet.
https://www.manageengine.com/network-monitoring/help/read-me-complete.html#125233
https://www.manageengine.com/network-monitoring/help/read-me-complete.html#125203
http://packetstormsecurity.com/files/164231/ManageEngine-OpManager-SumPDU-Java-Deserialization.html