This indicates an attack attempt against a buffer overflow in Novell ZENworks Desktop Management.
The vulnerability is caused by a boundary error in the TFTPD server component which listens by default on UDP port 69. It allows an attack to execute arbitrary code by sending a specially crafted request to the affected service.
Novell ZENworks Desktop Management 7 SP1
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the latest update from the vendor.