Unity Player Security Patch

Patch for Unity Player security issue: CVE-2025-59489

Build and release context

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

Build 20239399 · public branch
Steam updated 03 Oct 2025, 13:18 GMT · First observed 14 Sep 2026, 08:16 GMT
Build 20239399 · release_1_0_12 branch
Steam updated 03 Oct 2025, 13:17 GMT · First observed 14 Sep 2026, 08:16 GMT