What’s Vulnerable › Vulnerabilities

CVE-2026-15688: Password Authentication Bypass Vulnerability in GX Works3 and Motion Control Setting

• Severity: critical (CVSS 9.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-09
• Weakness: CWE-303

Description

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: all versions
• Mitsubishi Electric Corporation Motion Control Setting: all versions

References

• https://jvn.jp/vu/JVNVU99700314
• https://www.cisa.gov/news-events/ics-advisories/icsa-26-260-02
• https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-007_en.pdf

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