This indicates an attack attempt to exploit a Memory Corruption vulnerability in Microsoft Office.
The vulnerability is caused by an error when the vulnerable software handles a malformed VSD file. A remote attacker may be able to execute arbitrary code within the context of the application, via a crafted VSD file.
Microsoft Visio Viewer 2010 and Microsoft Visio Viewer 2010 Service Pack 1 (32-bit Edition)
Microsoft Visio Viewer 2010 and Microsoft Visio Viewer 2010 Service Pack 1 (64-bit Edition)
System Compromise: Remote attackers can gain control of vulnerable systems.
Refer to the vendor's web site for the suggested workaround: