This indicates an attempt to exploit a buffer overflow vulnerability in Novell eDirectory Server iMonitor.
A remote attacker may be able to cause a buffer overflow in the dhost.exe component of iMonitor. As a result the attacker may be able to cause a denial of service or gain unauthorized file access.
Novell eDirectory 8.7.3 and earlier.
Denial of service.
System compropmise: unauthorized file access.