Invensys Wonderware InTouch 8.0 creates a NetDDE share with insecure permissions (Everyone/Full Control), which allows remote authenticated attackers, and possibly anonymous users, to execute arbitrary programs.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2007-6003
http://www.securityfocus.com/bid/26496
http://www.kb.cert.org/vuls/id/138633
http://secunia.com/advisories/27751
http://pacwest.wonderware.com/web/News/NewsDetails.aspx?NewsThreadID=2&NewsID=201804