The Cyber-cannon was a Cyber-weapon that could operate in the vacuum of space. It was used by the Telosian Cybermen which attacked the Moonbase in 2070. (TV: The Moonbase/PROSE: Doctor Who and the Cybermen)
In the mid-20th century, the Cybermen of Mondas use a Cyberman with an in-built cannon. (COMIC: The Good Soldier)