[DanBlake]

I think its been around 7 years since a public exploit has been dropped for the apple airport extreme. YMMV though, as Apple has stopped selling them which means support is likely going to be minimal in the future if something does pop up. Alot of it is likely security through obscurity though as obviously the code is closed source and it uses a custom management interface vs web-access.

If you want to go the modern (better) route, enterprise equipment such as ubiquity or cisco with strict rules are likely your best bet. The budget option being a openwrt install with one of their recommended routers