The lock manager in Cisco CNS Network Registrar 6.0 through 6.1.1.3 allows remote attackers to cause a denial of service (process crash) via a certain "unexpected packet sequence."
https://exchange.xforce.ibmcloud.com/vulnerabilities/18328
http://www.securityfocus.com/bid/11793
http://www.cisco.com/en/US/products/products_security_advisory09186a008036786d.shtml