Cyber Resilience

CVE-2023-6943

Critical

Published: 30 January 2024

Published
30 January 2024
Modified
19 September 2025
KEV Added
Patch
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0397 88.6th percentile
Risk Priority 22 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-6943 is a critical-severity Unsafe Reflection (CWE-470) vulnerability in Mitsubishielectric Ezsocket. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 11.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') 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…

more

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 execute a malicious code by RPC with a path to a malicious library while connected to the products.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

mitsubishielectric
ezsocket
≥ 3.0
mitsubishielectric
fr configurator2
all versions
mitsubishielectric
got1000
all versions
mitsubishielectric
got2000
all versions
mitsubishielectric
gx works2
≥ 1.11m
mitsubishielectric
gx works3
all versions
mitsubishielectric
mc works64
all versions
mitsubishielectric
melsoft navigator
≥ 1.04e
mitsubishielectric
mt works2
all versions
mitsubishielectric
mx component
≥ 4.00a

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-470

Externally controlled class or code selection can be resolved and invoked inside the chamber, surfacing unsafe reflection without system impact.

References