CVE-2022-29951: Jtekt Nano 10gx Tuc-1157 Firmware

Critical severity, CVSS 9.1. EPSS: 1.3% chance of exploitation in the next 30 days.

JTEKT TOYOPUC PLCs through 2022-04-29 mishandle authentication. They utilize the CMPLink/TCP protocol (configurable on ports 1024-65534 on either TCP or UDP) for a wide variety of engineering purposes such as starting and stopping the PLC, downloading and uploading projects, and changing configuration settings. This protocol does not have any authentication features, allowing any attacker capable of communicating with the port in question to invoke (a subset of) desired functionality.

Affected products

• Jtekt Nano 10gx Tuc-1157 Firmware: affected versions not specified
• Jtekt Nano CPU Tuc-6941 Firmware: affected versions not specified
• Jtekt PC10B-P Tcc-6373 Firmware: affected versions not specified
• Jtekt PC10B Tcc-1021 Firmware: affected versions not specified
• Jtekt PC10E Tcc-4737 Firmware: affected versions not specified
• Jtekt PC10EL Tcc-4747 Firmware: affected versions not specified
• Jtekt PC10G-CPU Tcc-6353 Firmware: affected versions not specified
• Jtekt PC10GE Tcc-6464 Firmware: affected versions not specified
• Jtekt PC10P-Dp-Io Tcc-6752 Firmware: affected versions not specified
• Jtekt PC10P-Dp Tcc-6726 Firmware: affected versions not specified
• Jtekt PC10P Tcc-6372 Firmware: affected versions not specified
• Jtekt PC10PE-1616p Tcc-1102 Firmware: affected versions not specified
• Jtekt PC10PE Tcc-1101 Firmware: affected versions not specified
• Jtekt PC3JX-D Tcc-6902 Firmware: affected versions not specified
• Jtekt PC3JX Tcc-6901 Firmware: affected versions not specified
• Jtekt Pcdl Tkc-6688 Firmware: affected versions not specified
• Jtekt Plus CPU Tcc-6740 Firmware: affected versions not specified

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