The Network Threat Protection module in the Manager component in Symantec Endpoint Protection (SEP) 11.0.600x through 11.0.700x on Windows Server 2003 allows remote attackers to cause a denial of service (web-server outage, or daemon crash or hang) via a flood of packets that triggers automated blocking of network traffic.
Buffer overflow in Symantec Endpoint Protection (SEP) 11.0.600x through 11.0.710x and Symantec Network Access Control (SNAC) 11.0.600x through 11.0.710x allows local users to gain privileges, and modify data or cause a denial of service, via a crafted script.