Canon's original 18-55mm kit zoom, the baseline that every subsequent version improved upon.
The Canon EF-S 18-55mm f/3.5-5.6 is the very first version of Canon's APS-C kit lens, launched around 2003 with the original EOS 300D Digital Rebel. It established the 18-55mm zoom range as the standard kit lens focal length that every manufacturer has since adopted.
Optical quality is basic with adequate centre sharpness for the era but poor by modern standards. There is no image stabilisation, no USM or STM motor, and build quality is entirely plastic. The noisy DC autofocus motor is the slowest of any Canon kit lens.
Canon EF-S mount only, 58mm filter thread. This is the original from which the II, III, IS, IS II, IS STM, and f/4-5.6 IS STM all descend. Each generation improved on this foundation in some way.
Essentially free on the used market as it is universally considered obsolete. Any other version of the EF-S 18-55mm is a better choice. Only of interest as a historical curiosity or if literally no other lens is available.