Auth bypass in Jtekt Nano 10gx Tuc-1157
CVE-2022-29951
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.
Vulnerability class: Broken Authentication
EPSS: 0.012 (64.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (US Government Resource, Third Party Advisory, x_refsource_MISC, Mitigation)
Frequently asked questions
- What is CVE-2022-29951?
- CVE-2022-29951 is a critical-severity vulnerability in Jtekt Nano 10gx Tuc-1157, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2022-07-26.
- How severe is CVE-2022-29951?
- Critical severity. CVSS v3 base score is 9.1 out of 10.