Heap-based buffer overflow in RealNetworks Helix DNA Server 10.0 and 11.0 allows remote attackers to execute arbitrary code via (1) a long User-Agent HTTP header in the RTSP service and (2) unspecified vectors involving the "parsing of HTTP URL schemes".
https://exchange.xforce.ibmcloud.com/vulnerabilities/27317
https://exchange.xforce.ibmcloud.com/vulnerabilities/27316
http://www.vupen.com/english/advisories/2006/2521
http://www.securityfocus.com/bid/18606
http://securitytracker.com/id?1016365
http://secunia.com/advisories/20784
http://labs.musecurity.com/advisories/MU-200606-01.txt
http://archives.neohapsis.com/archives/fulldisclosure/2006-06/0600.html