CVE-2026-15688: Mitsubishi Electric Corporation Gx WORKS3

Critical severity, CVSS 9.2. EPSS: 0.1% chance of exploitation in the next 30 days.

Incorrect Implementation of Authentication Algorithm Vulnerability in Mitsubishi Electric GX Works3 and Motion Control Setting allows a local attacker to successfully authenticate even with an invalid block password by executing the affected product and modifying part of the executable module in memory, and thereby may be able to view, tamper with, destroy, or delete control programs.

Affected products

• Mitsubishi Electric Corporation Gx WORKS3: any version
• Mitsubishi Electric Corporation Motion Control Setting: any version

Published 2026-09-17. Last modified 2026-10-09.