OK only on the Internet. Basically some researchers found thousands and thousands of devices on the Internet via UPnP (v1 or SSDP, and V2 or WSD). Why is this a printer problem. Well most printers support one or both forms of UPnP. Of course my 2 cents. WHY THE HECK ARE THESE DEVICES ACCESSABLE FROM THE INTERNET? Said part is most of those devices will most likely remain in the state they are in.
http://www.theregister.co.uk/2013/01/29/hdmoore_upnp_flaw_rapid7/