Terrain Glitch
One of the only known glitches that is bannable in-game allows you to move a terrain-locked part of the game anywhere you want. This glitch is considered game-breaking because it is simply capable of breaking the whole planet itself. However, some of the terrain glitches can be either client-side or server-side.
Gattling Laser / Auto Torpedo Glitch
There is a glitch that allows you to grab the Gatling Laser and Auto Torpedo from the vehicle without having to sit on it. Currently, there is only one method working to obtain it; the other two were patched.