Is he vulnerable to Kryptonite and Red Sun radiation like regular Superman? It doesn't say it on the DC database.

His Kryptoninan organic parts are. But that's the limit of it. His mechanical parts and technomorphing are his distinctive features anyways so I don't think it would matter that much.

Cybory Superman possesses all of Superman's powers including Superman's vulnerability to kryptonite radiation, which appeared to weaken both the organic and technological components of Henshaw's body, while also preventing him from altering his body. However, even though his organic half might be mortally weakened by kryptonite, the mechanical components of his body will allow Henshaw to still function, albeit without any of his Kryptonian powers. He may be immune to Kryptonite radiation, as he seemed to suffer no ill effects when he fought a Kryptonite-poisoned Superman (who was also emitting the deadly radiation himself.)