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Mitsubishi Electric GX Works3 and Motion Control Settings

HIGH
CVSS 8.8
Date 2026-09-17T06:00:00+00:00
Source cisa-csaf
Published by CISA

// Description

Successful exploitation of this vulnerability could allow a local attacker to successfully authenticate even with an invalid block password by executing the affected product and modify part of the executable module in memory, and thereby allows the attacker to view, tamper with, destroy, or delete control programs.

// Vulnerabilities (1)

CVE ID CVSS Score Severity Description
CVE-2026-15688 8.8 high
Incorrect Implementation of Authentication Algorithm (CWE-303) vulnerability in the affected products allows a local attacker to successfully authenticate even with an invalid block password by executing the affected product and modify part of the executable module in memory, and thereby allows the attacker to view, tamper with, destroy, or delete control programs.

// Remediations (7)

Workaround: For customers using GX Works3, please download version 1.096A or later from the link https://www.mit
For customers using GX Works3, please download version 1.096A or later from the link https://www.mitsubishielectric.com/fa/download/software/detailsearch.page?mode=software&kisyu=/plceng&shiryoid=1000001411&lang=2&select=0&softid=1&infostatus=1_2_1&viewradio=0&viewstatus=&viewpos=, install it, and set the security version for projects to "2". Please refer to “15.9 Preventing Illegal Access to/Falsification of Data (Security Version)” in “GX Works3 Operating Manual” for details. For more information about the workaround, refer to the Mitsubishi Electric security advisory available at "https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-007_en.pdf".
Mitigation: For customers of the affected products, Mitsubishi Electric recommends preventing the user from clic
For customers of the affected products, Mitsubishi Electric recommends preventing the user from clicking on web links contained in emails or other messages from untrusted sources, or from opening attachments in untrusted emails, to minimize the risk of exploiting this vulnerability.
Mitigation: For customers of the affected products, Mitsubishi Electric recommends using a firewall, virtual pri
For customers of the affected products, Mitsubishi Electric recommends using a firewall, virtual private network (VPN), etc., to prevent unauthorized access, and allowing remote login only to trusted users when connecting a computer with the affected product to the Internet, to minimize the risk of exploiting this vulnerability.
Mitigation: For customers of the affected products, Mitsubishi Electric recommends using a computer with the aff
For customers of the affected products, Mitsubishi Electric recommends using a computer with the affected product within a LAN and blocking remote logins from untrusted networks, hosts, and users, to minimize the risk of exploiting this vulnerability.
Workaround: For customers using Motion Control Settings (Software packaged with GX Works3), Please download vers
For customers using Motion Control Settings (Software packaged with GX Works3), Please download version 1.070Y or later from the link "https://www.mitsubishielectric.com/fa/download/software/detailsearch.page?mode=software&kisyu=/ssc&shiryoid=1000000803&lang=2&select=0&softid=1&infostatus=1_8_1&viewradio=0&viewstatus=&viewpos=", install it, and set the security version for projects to "2". Please refer to “12.5 Preventing Illegal Access to/Falsification of Data (Security Version)” in “Motion Control Setting Function Help” for details. For more information about the workaround, refer to the Mitsubishi Electric security advisory at "https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-007_en.pdf".
Mitigation: For customers of the affected products, Mitsubishi Electric recommends installing antivirus software
For customers of the affected products, Mitsubishi Electric recommends installing antivirus software on a computer running the affected product, to minimize the risk of exploiting this vulnerability.
Mitigation: For customers of the affected products, Mitsubishi Electric recommends restricting physical access t
For customers of the affected products, Mitsubishi Electric recommends restricting physical access to a computer on which the affected product is installed, as well as to computers and network devices that can communicate with it, to minimize the risk of exploiting this vulnerability.

// References