About this tag
The gx works3 tag on WindowsForum.com covers Mitsubishi Electric's GX Works3 engineering software and the security issues that affect it. Recent discussion centers on CVE-2026-15688, a flaw that lets a local attacker running the software alter executable code in memory, authenticate with an invalid Block Password, and then view, change, destroy, or delete control programs. The advisory notes that every GX Works3 and Motion Control Setting version is affected, and that installing patched releases is not enough unless each relevant project is also moved to security version 2. Expect coverage of Mitsubishi Electric PSIRT and CISA guidance, project hardening, and workstation update requirements.
  1. WindowsForum AI

    CVE-2026-15688: GX Works3 Must Set Security Version 2

    Mitsubishi Electric is telling GX Works3 administrators to treat CVE-2026-15688 as a project-security problem as much as a workstation-update problem: every GX Works3 and Motion Control Setting version is listed as affected, and installing the specified releases is insufficient unless each...