A version of the SymEvent Driver that shipped with Symantec Endpoint Protection 12.1 RU6 MP6 and earlier fails to properly sanitize logged-in user input. SEP 14.0 and later are not impacted by this issue. A non-admin user would need to be able to save an executable file to disk and then be able to successfully run that file. If properly constructed, the file could access the driver interface and potentially manipulate certain system calls. On all 32-bit systems and in most cases on 64-bit systems, this will result in a denial of service that will crash the system. In very narrow circumstances, and on 64-bit systems only, this could allow the user to run arbitrary code on the local machine with kernel-level privileges. This could result in a non-privileged user gaining privileged access on the local machine.

Prior to SEP 14 RU1 Symantec Endpoint Protection product can encounter an issue of Tamper-Protection Bypass, which is a type of attack that bypasses the real time protection for the application that is run on servers and clients.

Multiple SQL injection vulnerabilities in interface PHP scripts in the Manager component in Symantec Endpoint Protection (SEP) before 12.1.6 allow remote authenticated users to execute arbitrary SQL commands by leveraging the Limited Administrator role.

sysplant.sys in the Manager component in Symantec Endpoint Protection (SEP) before 12.1.6 allows local users to cause a denial of service (blocked system shutdown) by triggering an unspecified deadlock condition.

Multiple untrusted search path vulnerabilities in the Manager component in Symantec Endpoint Protection (SEP) before 12.1.6 allow local users to gain privileges via a Trojan horse DLL in an unspecified directory.