CVE-2023-6942Network attack vector

Unauthenticated connection via crafted packets

Published Jan 30, 2024 · Updated Sep 19, 2025

Authentication bypass in multiple Mitsubishi Electric FA engineering products allows remote attackers to connect via crafted packets. Mitsubishi Electric has not disclosed which network service or packet field omits the required authentication check. No credentials or user interaction are required; the documented impact is unauthorized connection and integrity loss, not code execution.

CVSS severity7.5
High
EPSS probability0.95%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in multiple Mitsubishi Electric FA engineering products allows remote attackers to connect via crafted packets. Mitsubishi Electric has not disclosed which network service or packet field omits the required authentication check. No credentials or user interaction are required; the documented impact is unauthorized connection and integrity loss, not code execution.

The record

CVE
CVE-2023-6942
Published
Jan 30, 2024
Updated
Sep 19, 2025
Vendor
Mitsubishi Electric Corporation
Product
MX Component
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 2025Record 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=4.00A to 5.007H

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mitsubishi Electric Corporation · MX Componentversion=4.00A to 5.007H
Mitsubishi Electric Corporation · GX Works3version=1.106L and prior
Mitsubishi Electric Corporation · EZSocketversion=3.0 to 5.92
Mitsubishi Electric Corporation · GT Designer3 Version1 (GOT1000)version=1.325P and prior
Mitsubishi Electric Corporation · MX OPC Server DA/UAversion=all versions
Mitsubishi Electric Corporation · GT Designer3 Version1 (GOT2000)version=1.320J and prior
Mitsubishi Electric Corporation · MT Works2version=1.190Y and prior
Mitsubishi Electric Corporation · MELSOFT Navigatorversion=1.04E to 2.102G
Mitsubishi Electric Corporation · MELSOFT GX Works2version=1.11M to 1.626C

Published CVSS scores

7.5Mitsubishi Electric CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

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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