CVE-2008-0526
Cisco Unified IP Phone 7940, 7940G, 7960, and 7960G running SCCP firmware allows remote attackers to cause a denial of service (reboot) via a long ICMP echo request (ping) packet.
Date published : 2008-02-14
http://www.securityfocus.com/bid/27774
http://www.cisco.com/en/US/products/products_security_advisory09186a0080949c7a.shtml