The SysPlant.sys driver in the Application and Device Control (ADC) component in the client in Symantec Endpoint Protection (SEP) 12.1 before RU6-MP4 allows remote attackers to execute arbitrary code via a crafted HTML document, related to "RWX Permissions."
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.