The web server for Polycom ViaVideo 2.2 and 3.0 allows remote attackers to cause a denial of service (CPU consumption) by sending incomplete HTTP requests and leaving the connections open.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2002-1885
http://www.securityfocus.com/bid/5962
http://www.polycom.com/common/pw_item_show_doc/0%2C1449%2C1442%2C00.pdf