This indicates an attack attempt to exploit a Buffer Overflow vulnerability in IBM Lotus Notes.
The vulnerability is caused by an error that occurs when the vulnerable software handles a crafted ".WPD" file. A remote attacker may exploit this to execute arbitrary code via a crafted mail attachment.
IBM Lotus Notes 7.0.2
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the latest update, which is available from the vendor.