CVE-2015-6391
Cisco Unified SIP 3905 phones allow remote attackers to cause a denial of service (resource consumption and functionality loss) via a large amount of network traffic, aka Bug ID CSCuh51331.
Date published : 2015-12-04
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151202-sip