Omninerd.com has published an extensive article which covers the major 2006 Operating System Vulnerabilities. A lot of work has been put in careful analysis of various flavors of the 4 core OSes available today : Windows, OS X, Linux and UNIX.

From Microsoft, testing included Windows XP, Server 2003 and Vista Ultimate. Examinations against Apple included Mac OS9, OSX Tiger and OSX Tiger server.5 Augmenting Apple’s UNIX representation, security tests were also performed on FreeBSD 6.2 and Solaris 10.

Rounding up the market share, Linux security testing included Fedora Core 6, Slackware 11, SuSE Enterprise 10 and Ubuntu 6.10. The summarized coverage of 2006 vulnerabilities by SANS showed the most prevalent attack vectors were not directly against the operating systems themselves.However, this article approaches the operating system as an entity in and of itself for analysis of only the vulnerabilities of core features. As such, vulnerability scans were conducted against 2006’s flagship operating systems in various configurations to determine weakness from the moment of installation throughout the patching procedure.

From Microsoft, testing included Windows XP, Server 2003 and Vista Ultimate. Examinations against Apple included Mac OS9, OSX Tiger and OSX Tiger server.5 Augmenting Apple’s UNIX representation, security tests were also performed on FreeBSD 6.2 and Solaris 10. Rounding up the market share, Linux security testing included Fedora Core 6, Slackware 11, SuSE Enterprise 10 and Ubuntu 6.10. Read 2006 Operating System Vulnerability Summary by OmniNerd.com