CVE-2022-31205: Omron CP1W-CIF41 Firmware

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

In Omron CS series, CJ series, and CP series PLCs through 2022-05-18, the password for access to the Web UI is stored in memory area D1449...D1452 and can be read out using the Omron FINS protocol without any further authentication.

Affected products

• Omron CP1W-CIF41 Firmware: affected versions not specified
• Omron Sysmac CJ2H Firmware: before 1.5 (fixed in 1.5)
• Omron Sysmac CJ2M Firmware: before 2.1 (fixed in 2.1)
• Omron Sysmac CP1E Firmware: before 1.30 (fixed in 1.30)
• Omron Sysmac CP1H Firmware: before 1.30 (fixed in 1.30)
• Omron Sysmac CP1L Firmware: before 1.10 (fixed in 1.10)
• Omron Sysmac CS1 Firmware: before 4.1 (fixed in 4.1)

Published 2022-07-26. Last modified 2026-06-17.