Microsoft and Valve issue warning to gamers about Unity vulnerability
Both Microsoft and Valve have issued warnings about flaws in the Unity engine that could expose gamers to attack. A new version of Steam has been released to plug the security hole as well.
Tracked as CVE-2025-59489, the Unity Gaming Engine Editor vulnerability has a severity rating of 8.4. The nature of Unity is such that the flaw affects multiple platforms – Windows, Linux, macOS and Android. There is good news for some, however; Xbox consoles, Xbox Cloud Gaming, iOS and HoloLens all remain unaffected.