Security console service nexserv.exe is utilizing more than 95% of memory of server

nexserv.exe is utilizing more than 95% of memory of server on which security console is installed. After analyzing scan logs no such reason found & found that nexserv is using only 65% memory.

So how can i find what could be the reason of hike in memory & its always between 90% to 95%.Why nexserv is consuming high memory.