Microsoft today issued updates for both Office 2008 and Office 2004. The updates provide improvements to "stability and performance" and "address vulnerabilities that an attacker can use to overwrite the contents of a computer's memory by using malicious code."
Microsoft Office 2008 for Mac 12.1.2 Update weighs in at 159.6 MB and addresses security vulnerabilities and AppleScript reliability through the suite of Office applications, as well as providing specific performance improvements for Word, Excel, and Entourage. A full list of improvements is included on Microsoft's update description page.
Microsoft Office 2004 for Mac 11.5.1 Update weighs in at 14.5 MB and addresses security vulnerabilities, as well as fixing a specific stability issue in Word 2004 involving documents containing numbered lists and updating the Japanese postal code dictionary in Entourage 2004. Microsoft's update description page details these improvements and provides additional information about the update.