According to Microsoft, the vulnerability resides in the Microsoft Graphics component and impacts certain versions of Windows, Microsoft Office and Lync. The problem exists in the way specially-crafted TIFF images are handled. To exploit the vulnerability, an attacker would have to convince a user to preview or open a specially-crafted email message, open a malicious file or browse malicious Web content. If exploited successfully, the vulnerability can be used to remotely execute code.
The vulnerability affects Office 2003, 2007 and 2010 as well as Windows Server 2008 and Windows Vista. Right now, Microsoft Word documents are the current vector for attack.