Activision is taking enforcement action against Call of Duty players who abused an item duplication glitch in DMZ. The publisher confirmed the crackdown in a post on the official Call of Duty Updates account on X, warning that exploiting glitches violates the game’s Terms of Service.
“We’re beginning to take enforcement action,” Activision said, referring to accounts found abusing item duplication glitches and other exploits. The announcement doesn’t specify how many players are affected, explain how the glitch worked or detail the penalties being issued. It’s also unclear whether duplicated items will be removed from player inventories.
The action falls under Activision’s Call of Duty Security and Enforcement Policy, which covers the series’ releases from Modern Warfare (2019) onwards. The policy outlines several methods used by RICOCHET Anti-Cheat to detect cheating, including client- and server-side detection, monitoring applications running during gameplay, and behavioural models designed to identify unusual gameplay patterns. Reports from other players can also contribute to enforcement.
Activision says its security team researches and validates detection methods before taking action against suspected offenders. The policy also makes account holders responsible for violations regardless of who was using their accounts when the offence occurred. Sanctions are linked to Activision accounts and apply across all devices associated with them, with penalties ranging from temporary bans to termination of a player’s licence.
The crackdown comes shortly after the return of DMZ in Call of Duty: Modern Warfare 4, which launched on October 23, 2026, for PS5, Xbox Series X|S, PC and Nintendo Switch 2. Developed by Infinity Ward, the extraction-based mode originally debuted in Modern Warfare II.
