solid.exe in IBM solidDB before 6.5 FP2 allows remote attackers to execute arbitrary code via a long username field in the first handshake packet.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-2775
http://www.zerodayinitiative.com/advisories/ZDI-10-125/
http://www.securityfocus.com/bid/41653