Call of Duty: WWII joined Game Pass on June 30 but had to be taken offline days later due to reports of players getting hacked and trolled with pop-up messages on their PCs.
Players affected had their desktop backgrounds changed to lawyer Marc E. Mayer's face, who is representing Activision in a lawsuit against cheat makers, triggering concerns over hacking vulnerability.
Reports indicated an unpatched remote code execution exploit in the Game Pass-included Microsoft Store version led to players being trolled with Notepad pop-ups, PC shutdowns, and explicit content.
The issues primarily impacted PC players, with experts suggesting vulnerabilities may be related to COD: WWII's use of peer-to-peer matchmaking, prompting the game to be taken offline for investigation. Steam players were reportedly not affected as the vulnerability was specific to the Microsoft Store and Game Pass version.