Equipment skins can now be previewed in the store before purchase. Stability & Fixes

Would you like a version focused specifically on the release of this patch, or a comparison to MW3’s current state on Xbox backwards compatibility?

The update you are referring to is a 3 GB maintenance patch released in early 2026 for Call of Duty: Modern Warfare III

: Community reports indicate the patch targeted long-standing exploits, specifically closing a method involving PS4 save data corruption used to create "glitched" weapon builds.

: Activision Support hinted that the update was largely focused on stability and security to ensure the game remains playable even as it is disconnected from the main "COD HQ" launcher. Evolution of Modern Warfare III (Patch 1.43 and Beyond)

Despite the lack of an official blog post for this specific 3GB patch, players and community investigators quickly identified several key adjustments: