The importer doesn't specify it's for exterior use but I imagine many people use it as you intend. If both connections are inside and the cable is tacked against the wall (to prevent rubbing/wear against the brickwork in wind) I'm sure you will be fine.
By Aquarius Computers on 01 October 2015
I have had both 10 and 15 metres both were clearly marked if it isn't shop around first as there are lots out there around the same price the leads need to be at least gold coated for a better connection
By john simpson on 21 June 2016