VULNERABILITY INTELLIGENCE

CVE-2022-29951

CVSS score9.1 CRITICAL

EPSS probability1.32%

CISA KEVNot currently listed

Published2022-07-26

Last modified2026-06-17

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

Description

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.

Weakness classification

nvd@nist.gov: CWE-306
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-306

Primary references

cve@mitre.org — Mitigation, Third Party Advisory, US Government Resource
cve@mitre.org — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory