...of bugs found in Microsoft's Office software, including Word, over the past few years. In order to exploit these flaws, attackers must typically trick the victim into opening a maliciously encoded Office document, which then allows them to install...
http://www.cio.com/article/428013/Symantec_Warns_of_New_Word_Attack
...findings that equipment from many vendors who have implemented the H.323 protocol standard for IP Telephony contains flawsattackers can exploit. (for more detail, visit http://www.uniras.gov.uk/vuls/2004/006489/h323.htm ) ...
http://www.netclarity.net/NC-VoIP-Whitepaper.pdf