Valve has rolled out a new Steam client update dated October 2, and it’s already being automatically distributed to users. The release tackles a Unity-related security issue (CVE-2025-59489) by blocking game launches if an exploit attempt is detected, tightening protections against potential attacks.
Additionally, the update provides an “End of Life” notice for 32-bit Windows users—specifically, Windows 10 32-bit, which remains the only 32-bit Windows version still supported. Steam will continue to run on Windows 10 64-bit, and 32-bit games themselves aren’t going anywhere. However, official client support for 32-bit Windows is set to end on January 1, 2026.
The update also includes fixes across various parts of the client. Users running D3D12 games should see fewer overlay crashes after Valve patched a regression introduced in the last beta cycle. Vulkan recording performance has been improved, making in-game capture smoother for some titles.
Steam Input also received attention, with Joy-Con users now able to use dual gyros in combined mode. Additionally, a handful of bugs in the configurator were resolved.
For SteamVR users, suppressed client notifications will no longer flood the headset when VR is started again. Linux players will appreciate a fix for a crash that could occur when DualSense controllers are connected and idle. And Windows users now get extra system information—the client can detect Secure Boot and TPM status, which will also be included in the Steam Hardware Survey going forward.
For more information on all changes, see Valve’s announcement.
