Disable suexec

To find suexec type in

whereis suexec

Result

suexec: /usr/sbin/suexec /usr/sbin/suexec.saved_by_psa /usr/share/man/man8/suexec.8.gz

Now move the file to a backup

mv /usr/sbin/suexec /usr/sbin/suexec_old

Restart apache

/etc/init.d/httpd  restart