"The vulnerability CVE-2014-1761 is in the file format parser for RTF (Rich Text Format) and could be used by an attacker to gain remote access to the targeted system. The attack vector is a document in RTF format that the victim would have to open with Word," read the post.

"If the target uses Outlook 2007, 2010 or 2013 for email, please be aware that Word is the default viewer for emails, and that even looking at the email in the preview pane could lead to an infection through this attack."