Hotfix - Unity Runtime Exploit (CVE-2025-59489)

For more information on the issue: https://flatt.tech/research/posts/arbitrary-code-execution-in-unity-runtime/

Build and release context

Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.

Build 20271514 · public branch
Steam updated 06 Oct 2025, 14:11 · First observed 14 Sep 2026, 12:22