The Session Initiation Protocol (SIP) implementation in Mediatrix Telecom VoIP Access Devices and Gateways running SIPv2.4 and SIPv4.3 firmware allows remote attackers to cause a denial of service or execute arbitrary code via crafted INVITE messages, as demonstrated by the OUSPG PROTOS c07-sip test suite.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11379
http://www.securityfocus.com/bid/6904