Microsoft has reported about new MS Office Word vulnerability that could allow hackers to install malicious software on a victim’s PC. The attack involves a malicious Word document and Jet Database Engine that is used by a number of products including Microsoft Access. Microsoft is investigating whether other programs may also be exploited in this type of attack. Word versions from 2000 to 2007 unless users are running Windows Vista or Windows Server 2003, Service Pack 2. Those two operating systems include a newer version of the Jet Database Engine that does not have the bug. It is advised not to open or save Word files that you receive from untrusted sources or that you receive unexpectedly from trusted sources.