If that is all there is, there is definitely nothing to worry about.
It is just a very mild surface rust and is also on none structural components.
The top one looks like an engine mount which will be made of fairly thick steel, so it would take a very long time to become weakened.
The middle one is just a bracket for the brake ABS solenoids.
The bottom one looks like a bit of bodywork, but again only very mild rust.
For a 14 year old car, it is doing fine.
To slow down the rust you could simply smear a bit of grease on them, or maybe something like waxoyl.