CVE-2020-6986: Omron PLC CJ1 Firmware
High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.
In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.
Affected products
Published 2020-03-05. Last modified 2026-06-17.