High CPU use may be experienced on some macOS 10.15.x machines running the 14.2 RU2 release of Symantec Endpoint Protection (SEP). The process involved is the new com.symantec.mes.systemextension.
Due to changes made in macOS 10.15, scan operations with autoprotect were happening unnecessarily.
SEP 14.2 RU2
This is resolved in Symantec Endpoint Protection version 14.2 RU2 MP1 build b5576 and is available via the Broadcom Download Center
Please note that 14.2 RU2 MP1 b5576 is a Mac only build. All other build types within the download will still be the base 14.2 RU2 MP1 build.