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ICSA-23-061-01  ·  Published 2023-06-20  ·  View on CISA ICS-CERT ↗

Mitsubishi Electric MELSEC iQ-F Series

CVSS 7.5 HIGH

Risk Summary

Successful exploitation of this vulnerability could allow an unauthenticated malicious actor to login to a file transfer protocol (FTP) server or web server by obtaining plaintext credentials stored in project files.

CVEs (1)

Remediations

  • Mitsubishi Electric recommends users take the following mitigation measures to minimize the risk of a malicious actor exploiting this vulnerability:
  • Encrypt the communication data or project files when sending and receiving or sharing these files.
  • Use a firewall or virtual private network (VPN), etc. to prevent unauthorized access when internet access is required.
  • Use product(s) within a local area network (LAN) and block access from untrusted networks and hosts using firewalls.
  • Use the IP filter function to block access from untrusted hosts.
  • For details regarding the IP filter function, users can refer to "12.1 IP Filter Function" in the MELSEC iQ-F FX5 User's Manual (Ethernet Communication).
  • Restrict physical access to affected products.
  • For specific update instructions and additional details, see the Mitsubishi Electric advisory.

Affected Vendors

Mitsubishi Electric

Affected Products (5)

Mitsubishi Electric · All models of FX5U(C) CPU modules vers:all/*
Mitsubishi Electric · All models of FX5UJ CPU modules vers:all/*
Mitsubishi Electric · All models FX5S CPU modules vers:all/*
Mitsubishi Electric · FX5-ENET vers:all/*
Mitsubishi Electric · FX5-ENET/IP vers:all/*

Affected Sectors

Critical Manufacturing

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