CVE-2023-49140Network attack vector

System stoppage via crafted commplex-link packets

Published Dec 12, 2023 · Updated Oct 8, 2024

Denial of service in JTEKT GC-A2 HMIs of all versions allows remote attackers to stop the system via crafted commplex-link packets. The vendor identifies crafted packets sent to specific ports but does not disclose the packet fields or resource operation that exhausts the commplex-link service. No authentication or user interaction is required, and recovery requires restarting the stopped HMI.

CVSS severity7.5
High
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in JTEKT GC-A2 HMIs of all versions allows remote attackers to stop the system via crafted commplex-link packets. The vendor identifies crafted packets sent to specific ports but does not disclose the packet fields or resource operation that exhausts the commplex-link service. No authentication or user interaction is required, and recovery requires restarting the stopped HMI.

The record

CVE
CVE-2023-49140
Published
Dec 12, 2023
Updated
Oct 8, 2024
Vendor
JTEKT ELECTRONICS CORPORATION
Product
GC-A25
Classifications
CWE-400, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 8, 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=all versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JTEKT ELECTRONICS CORPORATION · GC-A25version=all versions
JTEKT ELECTRONICS CORPORATION · GC-A26-J2version=all versions
JTEKT ELECTRONICS CORPORATION · GC-A24W-C(W)version=all versions
JTEKT ELECTRONICS CORPORATION · GC-A24 Firmwareversion=0 <*
JTEKT ELECTRONICS CORPORATION · GC-A28-Cversion=all versions
JTEKT ELECTRONICS CORPORATION · GC-A27-Cversion=all versions
JTEKT ELECTRONICS CORPORATION · GC-A22W-CWversion=all versions
JTEKT ELECTRONICS CORPORATION · GC-A22W-CW Firmwareversion=0 <*
JTEKT ELECTRONICS CORPORATION · GC-A26W-C(W)version=all versions
JTEKT ELECTRONICS CORPORATION · GC-A28-C Firmwareversion=0 <*
JTEKT ELECTRONICS CORPORATION · GC-A25 Firmwareversion=0 <*
JTEKT ELECTRONICS CORPORATION · GC-A26W-C(W) Firmwareversion=0 <*
JTEKT ELECTRONICS CORPORATION · GC-A24-Mversion=all versions
JTEKT ELECTRONICS CORPORATION · GC-A26version=all versions
JTEKT ELECTRONICS CORPORATION · GC-A24-M Firmwareversion=0 <*
JTEKT ELECTRONICS CORPORATION · GC-A26 Firmwareversion=0 <*
JTEKT ELECTRONICS CORPORATION · GC-A27-C Firmwareversion=0 <*
JTEKT ELECTRONICS CORPORATION · GC-A26-J2 Firmwareversion=0 <*
JTEKT ELECTRONICS CORPORATION · GC-A24W-C(W) Firmwareversion=0 <*
JTEKT ELECTRONICS CORPORATION · GC-A24version=all versions

Published CVSS scores

7.5JTEKT ELECTRONICS CORPORATIONCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8JTEKT ELECTRONICS CORPORATIONAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T0814Denial of Service

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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