Treyarch had to temporarily remove 3 Maps from the Infected mode playlist in Call of Duty: Black Ops 4 due to an exploit that gave players a huge advantage.
What has been removed in Black Ops 4? The maps Hacienda, Arsenal, and Frequency are now temporarily no longer in the playlist of the Infected game mode. When they will return is unclear.
Which mode is it about? The new Infected mode in Black Ops 4 has only been available since Tuesday, April 9, first for PS4 players in the game.
This is a multiplayer mode that pits 2 groups against each other. On one side are infected zombies, on the other side are soldiers. The goal of the zombies is to infect all the soldiers. If they fail to do so within the given time, the soldiers win.
Why was the exploit so severe? The community has already figured out how the glitch worked. With a certain key combination, players can jump through specific walls or doors.
With this, they can reach areas behind walls or other parts of the map that are normally unreachable.
This brings enormous advantages in this game mode, as soldiers can hide from the nasty zombies. If the zombies don’t know how to get to the area outside the map, they can’t infect the soldiers and will inevitably lose the round.

As DualShockers writes, the maps are still available in other game modes of Black Ops 4. So one wonders whether these exploits only exist in the Infected game mode or if they are just not as severe in other game modes.
This speed glitch was also a game-ruiner in Black Ops 4
Treyarch is working on a solution: This topic is quite well-known on Reddit. Players are already posting guides on how to perform the glitch to reach the exploiters as zombies behind walls.
Treyarch also responded to these threads on Reddit, stating that they are already working on a solution to the problem.
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