Zero-Day Vulnerabilities

Of the zero-day vulnerabilities documented during the first half of 2007, three of the vulnerabilities affected Microsoft Office applications. This is a drop from the six zero-day vulnerabilities that affected Office in the second half of 2006. The number of zero-day Office vulnerabilities may have dropped due to measures taken by Microsoft to patch as many pending Office vulnerabilities as possible.

Source: Symantec Internet Security Threat Report, Vol. XII