This indicates an attempt to exploit a memory corruption vulnerability in Microsoft Publisher.
The vulnerability is caused by an error that occurs when the vulnerable software handles a malicious Publisher file. It allows a remote attacker to execute arbitrary code via a crafted Publisher file.
Impact
System compromise: remote code execution.
Affected Products
Microsoft Office 2000 Service Pack 3 Microsoft Office XP Service Pack 3 Microsoft Office 2003 Service Pack 2 Microsoft Office 2003 Service Pack 3 2007 Microsoft Office System 2007 Microsoft Office System Service Pack 1