This indicates an attack attempt to exploit a Memory Corruption Vulnerability in Microsoft Office.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted RTF file. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted RTF file.
Microsoft Office 2007 Service Pack 3 (3114442)
Microsoft Office 2010 Service Pack 2 (3114400)
Microsoft Office 2013 Service Pack 1 (3114340)
Microsoft Office 2013 RT Service Pack 1 (3114340)
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.