"Instructions to drop the control user(PMA):
1. Enter phpMyAdmin with root user.
2. Below the phpMyAdmin logo (at the left sidebar) you can see a button that has the text SQL, click on it.
3. A textbox will appear where you can insert a query, insert this:
Code:
DROP USER 'pma'@'localhost';
4. Click on Execute, if you get any error post it in this thread and we'll try to help you.
Now to be sure it worked, logout from phpmyadmin and try to login with the user pma without any password. If it doesn't work then your server should be secure against this vulnerability."