Comment Printers are another weak spot (Score 1) 321
There are a lot of things you can do with some printers that enable web servers without any authentication at all. Print things, ask to do a scan (people forget things on scanners), view and modify contact lists for FAX and scan to email tools, etc. Definitely potential for "denial of ink and paper" attacks on a printer.
IMO manufacturers should only allow local network access to these devices unless you explicitly set or modify the default login.