Multiple integer overflows in the HMI application in DATAC RealFlex RealWin 2.1 (Build 6.1.10.10) and earlier allow remote attackers to execute arbitrary code via crafted (1) On_FC_MISC_FCS_MSGBROADCAST and (2) On_FC_MISC_FCS_MSGSEND packets, which trigger a heap-based buffer overflow.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-1565
http://www.vupen.com/english/advisories/2011/0742
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-080-04.pdf
http://www.securityfocus.com/bid/46937
http://www.exploit-db.com/exploits/17025
http://securityreason.com/securityalert/8177