Terrain Glitch
One of the only known glitches that is bannable in-game, what this does is allow you to move a terrain-locked part of the game to 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 cilent side or server side.
Gattling Laser Glitch
There is a glitch that allows you to grab the Gattling Laser from the vehicle without having to sit on it. Currently, there is only one method working to obtain it; the other two were patched.