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ICSA-20-161-02  ·  Published 2021-04-20  ·  View on CISA ICS-CERT ↗

Mitsubishi Electric MELSEC iQ-R Series (Update C)

CVSS 5.3 MEDIUM

Risk Summary

Successful exploitation of this vulnerability could cause the Ethernet port to enter a denial-of-service condition.

CVEs (1)

Remediations

  • R00/01/02CPU: Firmware Versions 8 or later
  • R04/08/16/32/120CPU, R04/08/16/32/120ENCPU: Firmware Versions 40 or later
  • R08/16/32/120SFCPU: Firmware Versions 21 or later
  • R08/16/32/120PCPU: Firmware Versions 25 or later
  • R08/16/32/120PSFCPU: Firmware Versions 06 or later
  • RJ71EN71: Firmware Versions 50 or later
  • Mitsubishi Electric recommends users of the affected devices take the following measures for cyber-attacks such as DoS attack or unauthorized access from untrusted networks or hosts.
  • Connection to untrusted networks or hosts: Check whether the modules mounted in the equipment used are connected to untrusted networks or hosts.
  • Firewalls: If the modules are connected to untrusted networks or hosts, check whether measures such as firewalls are properly configured.
  • Please see the publication from Mitsubishi Electric for more information.

Affected Vendors

Mitsubishi Electric

Affected Products (6)

Mitsubishi Electric · RJ71EN71 <= 49
Mitsubishi Electric · R08/16/32/120SFCPU <= 20
Mitsubishi Electric · R08/16/32/120PSFCPU <= 05
Mitsubishi Electric · R08/16/32/120PCPU <= 24
Mitsubishi Electric · R04/08/16/32/120CPU R04/08/16/32/120ENCPU <= 39
Mitsubishi Electric · R00/01/02CPU <= 7

Affected Sectors

Critical Manufacturing

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