disable bonjour (mdns, rendezvous)

My company performs regular security scans of devices on our network. A recent scan found that we had rendezvous, or mdns enabled on our ReadyNAS 3200 and that it is exposing a security issue over port 5353. I found this forum(but cannot update because it is too old):
http://www.readynas.com/forum/viewtopic.php?f=7&t=11901

I looked on my NAS and the bonjour service is not enabled, only UPnp is. Is it possible that our current firmware - RAIDiator 4.2.15, has an issue where this isn't fully disabled?

Does anyone have any other thoughts on how this could still be an issue even with bonjour disabled?

Thank you.