This indicates an attack attempt to exploit a memory corruption vulnerability in Microsoft Office Publisher.
The vulnerability is caused by an error that occurs when the software handles a malformed .PUB file. It allows a remote attacker to execute arbitrary code via a crafted .PUB file.
Microsoft Office 2000 Service Pack 3
Microsoft Office XP Service Pack 3
Microsoft Office 2003 Service Pack 2
Microsoft Office Publisher 2000
Microsoft Office Publisher 2002
Microsoft Office Publisher 2003 Service Pack 2
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply patch, available from the website: