Apple on Monday issued security updates for OS X 10.4.11 (Tiger). There are separate updates for PowerPC and Intel versions of Tiger, as well as PowerPC and Universal versions of Tiger Server.
The security updates fix problems related to maliciously created archives, images, ISO files, and Web sites; vulnerabilities in Adobe's Flash Player plug-in; an issue with Internet Sharing that could allow a denial-of-service; and more. For a complete list of fixes, visit Apple's support page detailing Security Update 2008-008.
The updates are available now via OS X's Software Update feature or from Apple's support Web site.
Apple also released the 10.5.6 update for Leopard users at the same time.