This indicates an attack attempt against a denial-of-service vulnerability in Recover Data for Novell Netware.
The vulnerability is caused by improper handling of a specially crafted '.sav' file. Attackers can exploit it to cause the vulnerable application to crash.
Recover Data for Novell Netware 1.0
Denial of Service: Remote attackers can crash vulnerable systems.
Currently we are not aware of any vendor supplied patch for this issue.