Just raising awareness of another good reason to upgrade to SEP 12.1 RU6 MP3. Three vulnerabilities which affect MP2 and earlier have been announced. For details, please see:
Security Advisories Relating to Symantec Products - Symantec Endpoint Protection Elevation of Privilege Issues
SYM15-011
http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20151109_00
CVE
BID
Description
CVE-2015-6554
BID 77494
SEPM Improper Handling of Untrusted Data
CVE-2015-6555
BID 77495
SEPM Java Code Execution Elevation of Privilege
CVE-2015-1492
BID 76083
SEP Client Binary Planting
RU6 MP3 closes any danger of exploit and also includes many other fixes and improvements:
Symantec™ Endpoint Protection 12.1.6 MP3 Release Notes
http://www.symantec.com/docs/DOC9122
Please do upgrade to take advantage of these improvements and to remain secure! While upgrading, also be sure that all SEP components are installed and enabled. AV alone is not comprehensive protection against today's threats.
Add or remove features to existing Endpoint Protection clients
Article URL: http://www.symantec.com/docs/TECH90936