You need to be sure the weather stripping and siding itself is properly done to keep the siding water tight.
Hole in vinyl siding attic.
You can patch a hole in your vinyl siding in less than three minutes using tear aid type b from sailrite.
Squirt a generous dollop of exterior caulking that matches the color of the siding into the hole.
Clean the siding around the hole with vinyl siding cleaner or dish detergent and water then dry the siding.
A siding zip tool pops the piece off from the bottom edge.
Cut a scrap piece of siding to a length that is several inches longer than the hole.
There are several ways to repair damaged vinyl siding depending on the extent of the damage.
A hole saw tin snips etc will slice right through it.
Got a hole in your vinyl siding and want to patch it quickly.
When we cut with a circular saw we often install the blade backwards to minimize ripping and tearing of the vinyl.
Cover the hole from the back side with foil tape then put the siding back where it belongs.
That said the hole is the least of your effort.