CVE-2022-29951Network attack vector

Unauthenticated PLC control via authentication-free CMPLink commands

Published Jul 26, 2022 · Updated Oct 27, 2024

Missing authentication in JTEKT PC10G-CPU TCC-6353 firmware allows remote attackers to alter PLC settings, data, or service. Its CMPLink/TCP handler accepts engineering commands for project transfer, configuration changes, and controller start or stop without authenticating the sender. The attacker must reach the configured TCP or UDP port, after which unauthenticated commands can manipulate control state or interrupt PLC operation.

CVSS severity9.1
Critical
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in JTEKT PC10G-CPU TCC-6353 firmware allows remote attackers to alter PLC settings, data, or service. Its CMPLink/TCP handler accepts engineering commands for project transfer, configuration changes, and controller start or stop without authenticating the sender. The attacker must reach the configured TCP or UDP port, after which unauthenticated commands can manipulate control state or interrupt PLC operation.

The record

CVE
CVE-2022-29951
Published
Jul 26, 2022
Updated
Oct 27, 2024
Vendor
JTEKT Corporation
Product
PC10G-CPU TCC-6353 Firmware
Classifications
CWE-306, T0855
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JTEKT Corporation · PC10G-CPU TCC-6353 Firmwareversion=0 <*

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
7.7JPCERT/CCCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H
9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
7.7JTEKT CorporationCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T0855Unauthorized Command Message

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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