This indicates an attack attempt to exploit a Remote Code Execution vulnerability in Microsoft Office.
The vulnerability is due to an error when the vulnerable software handles a crafted Office file that contains malicious macro. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted Office file.
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue.
Please disable Macro in Office if they are not needed.