Hello,
That's it. Those are the right ones!
Regarding the second question, nah I mean Cisco developers usually fix previous bugs and add new features.
Add the moment I can ensure you there is no such a security breach (My recommendation: Read the release notes of that version for new bugs and ofcourse new enhacements.)
Rate all of the helpful posts!!!
Regards,
Jcarvaja
Follow me on http://laguiadelnetworking.com
Julio Carvajal
Senior Network Security and Core Specialist
CCIE #42930, 2xCCNP, JNCIP-SEC