CVE-2019-18259: Omron PLC Cj Firmware

Critical severity, CVSS 9.8. EPSS: 2.1% chance of exploitation in the next 30 days.

In Omron PLC CJ series, all versions and Omron PLC CS series, all versions, an attacker could spoof arbitrary messages or execute commands.

Affected products

• Omron PLC Cj Firmware: any version
• Omron PLC Cs Firmware: any version

Published 2019-12-16. Last modified 2026-06-17.