Hi Nraj,
Q. Is there a list of other SEP versions that is compatible with IE 10? Thanks.
--> SEP 12.1 RU2 is the latest version and compatible with IE 10.
You can check the system requirements document to see the product compatibility.
Release Notes and System Requirements for all versions of Symantec Endpoint Protection and Symantec Network Access Control
http://www.symantec.com/docs/TECH163829