CVE-2018-18989: Omron Cx-One

High severity, CVSS 7.8. EPSS: 1.6% chance of exploitation in the next 30 days.

In CX-One Versions 4.42 and prior (CX-Programmer Versions 9.66 and prior and CX-Server Versions 5.0.23 and prior), when processing project files, the application fails to check if it is referencing freed memory. An attacker could use a specially crafted project file to exploit and execute code under the privileges of the application.

Affected products

• Omron Cx-One: up to and including 4.42
• Omron Cx-Programmer: up to and including 9.66
• Omron Cx-Server: up to and including 5.0.23

Published 2018-12-04. Last modified 2026-06-17.