CVE-2019-18259

CRITICAL

Omron PLC CJ and CS Firmware - Authentication Bypass by Spoofing

Title source: llm

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

Core 1

Core References

Third Party Advisory, US Government Resource x_refsource_misc

CVSS v3 9.8

EPSS 0.0228

EPSS Percentile 80.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-290

Status published

Products (2)

omron/plc_cj_firmware

omron/plc_cs_firmware

Published Dec 16, 2019

Tracked Since Feb 18, 2026