I know SQL 2005 SP3 Cumulative Update 4 was released in June: http://support.microsoft.com/?Kbid=970279
I do not want to install any CUs unless there is a security update in them b/c my company is paranoid, but most of my applications are only getting certified on SP3.
I have not been able to find any specific info or links to any MS Security Bulletins. I may have just missed it. Are any security patches included in the CU's? Does anyone know?