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Vulnerability record · CVE-2023-6942 · published 30 January 2024

CVE-2023-6942: Mitsubishielectric ezsocket missing authentication for critical function vulnerability

Mitsubishielectric · Ezsocket

Missing Authentication for Critical Function vulnerability in Mitsubishi Electric Corporation EZSocket versions 3.0 to 5.92, GT Designer3 Version1(GOT1000) versions 1.325P and prior, GT Designer3 Version1(GOT2000) versions 1.320J and prior, GX Works2 versions 1.11M to 1.626C, GX Works3 versions 1.106L and prior, MELSOFT Navigator versions 1.04E to 2.102G, MT Works2 versions 1.190Y and prior, MX Component versions 4.00A to 5.007H and MX OPC Server DA/UA all versions allows a remote unauthenticated attacker to bypass authentication by sending specially crafted packets and connect to the products illegally.

7.5 CVSS 3.1 High EPSS 0.95% · top 40.0% CWE-306 · Missing authentication for critical function
7.5CVSS 3.1 base score
0.95%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Missing Authentication for Critical Function vulnerability in Mitsubishi Electric Corporation EZSocket versions 3.0 to 5.92, GT Designer3 Version1(GOT1000) versions 1.325P and prior, GT Designer3 Version1(GOT2000) versions 1.320J and prior, GX Works2 versions 1.11M to 1.626C, GX Works3 versions 1.106L and prior, MELSOFT Navigator versions 1.04E to 2.102G, MT Works2 versions 1.190Y and prior, MX Component versions 4.00A to 5.007H and MX OPC Server DA/UA all versions allows a remote unauthenticated attacker to bypass authentication by sending specially crafted packets and connect to the products illegally.

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

Affected products

10 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://jvn.jp/vu/JVNVU95103362 Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-24-030-02 Third Party AdvisoryUS Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-020_en.pdf Vendor Advisory
https://jvn.jp/vu/JVNVU95103362 Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-24-030-02 Third Party AdvisoryUS Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-020_en.pdf Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-6943Mitsubishielectric ezsocket vulnerabilityUse of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Mitsubishi Electric Corporation EZSocket versions…EPSS 2.1%9.8CVE-2020-14496Mitsubishielectric cpu module logging configuration tool vulnerabilitySuccessful exploitation of this vulnerability for multiple Mitsubishi Electric Factory Automation Engineering Software Products of various versions c…EPSS 0.87%9.8CVE-2020-14521Mitsubishielectric c controller interface module utility unquoted search path vulnerabilityMultiple Mitsubishi Electric Factory Automation engineering software products have a malicious code execution vulnerability. A malicious attacker cou…EPSS 1.3%9.8CVE-2020-14523Mitsubishielectric cw configurator path traversal vulnerabilityMultiple Mitsubishi Electric Factory Automation products have a vulnerability that allows an attacker to execute arbitrary code.EPSS 2.3%9.8CVE-2021-20588Mitsubishielectric c controller module setting and monitoring tool memory buffer overflow vulnerabilityImproper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric FA Engineering Software (CPU Module Logging Configuration To…EPSS 6.9%9.8CVE-2021-20587Mitsubishielectric c controller module setting and monitoring tool heap-based buffer overflow vulnerabilityHeap-based buffer overflow vulnerability in Mitsubishi Electric FA Engineering Software (CPU Module Logging Configuration Tool versions 1.112R and pr…EPSS 3.9%7.8CVE-2024-25088Jungo windriver improper privilege management vulnerabilityImproper privilege management in Jungo WinDriver before 12.5.1 allows local attackers to escalate privileges and execute arbitrary code.EPSS 0.18%7.8CVE-2024-25086Jungo windriver code injection vulnerabilityImproper privilege management in Jungo WinDriver before 12.2.0 allows local attackers to escalate privileges and execute arbitrary code.EPSS 0.34%

Source: NIST National Vulnerability Database (record CVE-2023-6942), CISA KEV, FIRST EPSS (scores of 2026-10-08). This page is refreshed as NVD updates the record.