master.exe in the SNMP Master Agent in RealNetworks Helix Server and Helix Mobile Server 14.x before 14.3.x allows remote attackers to cause a denial of service (unhandled exception and daemon crash) via a crafted Open-PDU request that triggers incorrect DisplayString processing, a different vulnerability than CVE-2012-1923.
http://www.securitytracker.com/id?1026898
http://www.securityfocus.com/bid/52929
http://secunia.com/secunia_research/2012-9/
http://helixproducts.real.com/docs/security/SecurityUpdate04022012HS.pdf