This indicates an attempt to exploit a remote Code Execution vulnerability in Microsoft Windows.
This vulnerability is caused by an error in the MSCOMCTL ActiveX Control when processing malicious data in a stream. As a result, a remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted DOC or RTF file.
Windows XP Service Pack 3
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.