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, .SAM, .MIF, or .DOC 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 the vulnerable system.
Apply the patch supplied by the vendor.