cPanel introduce Password Strength feature to cPanel 11.25 and we do apply it to all of our shared environment server.
This feature used to applied as a security precautions to prevent any account is being hijacked by malicious user due to easy password.
The check will applied to every function and feature listed below within the WHM and cPanel that allows to set or change the password.
cPAddon/Site Software Installs
ExaBytes/WPWebhost shared server do apply the password strength to value of 55 and you might wonder what is value of 55 is that.
To understand for more, you may check with the URL as below where it is similar to cPanel Password Strength algorithm.