CVE intelligence and bounded remediation

CVE-2023-2062 — Mitsubishielectric Fx5-Enet/Ip Firmware security vulnerability

Medium CVSS 6.2

Missing Password Field Masking vulnerability in Mitsubishi Electric Corporation EtherNet/IP configuration tools SW1DNN-EIPCT-BD and SW1DNN-EIPCTFX5-BD allows a remote unauthenticated attacker to know the password for MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 and MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP. This vulnerability results in authentication bypass vulnerability, which allows the attacker to access MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 and MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP via FTP.

Severity
Medium
CVSS
6.2 (3.1)
Published
2023-06-02
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-549, CWE-668

Affected products

  • mitsubishielectric / fx5-enet/ip_firmware
  • mitsubishielectric / sw1dnn-eipct-bd_firmware
  • mitsubishielectric / rj71eip91_firmware
  • mitsubishielectric / sw1dnn-eipctfx5-bd_firmware

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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