Microsoft has released Office for Mac 2011 version 14.4.5, which includes critical bug fixes and security improvements. You can download the free 113 MB patch from Microsoft’s website. The change notes from Microsoft are below:
This update fixes critical issues and also helps to improve security. It includes fixes for vulnerabilities that an attacker can use to overwrite the contents of your computer’s memory with malicious code.
The update is recomended for all users of Office 2011, which is the most recently version of the productivity suite for OS X systems.