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Rewterz Threat Advisory – ICS: Mitsubishi Electric MELFA controllers Vulnerability
January 27, 2023

Rewterz Threat Advisory – ICS: Mitsubishi Electric MELSEC iQ-F, iQ-R Series Vulnerabilities

Severity

High

Analysis Summary

CVE-2022-40267 CVSS:5.9

Mitsubishi Electric MELSEC iQ-F, iQ-R Series could allow a remote attacker to bypass security restrictions, caused by predictable seed in the pseudo-random number generator. By sending a specially-crafted request, an attacker could exploit this vulnerability to bypass authorization.

CVE-2022-40265 CVSS:8.6

Mitsubishi Electric MELSEC iQ-R Series devices are vulnerable to a denial of service, caused by improper validation of user-supplied input. By sending a specially-crafted packets, a remote attacker could exploit this vulnerability to cause a denial of service.

Impact

  • Denial of Service
  • Security Bypass

Indicators Of Compromise

CVE

  • CVE-2022-40267
  • CVE-2022-40265

Affected Vendors

Mitsubishi Electric

Affected Products

Mitsubishi Electric MELSEC

iQ-FiQ-R Series

Mitsubishi Electric MELSEC iQ-R Series R04ENCPU 65

Mitsubishi Electric MELSEC iQ-R Series R08ENCPU 65

Mitsubishi Electric MELSEC iQ-R Series R120ENCPU 65

Mitsubishi Electric MELSEC iQ-R Series R16ENCPU 65

Mitsubishi Electric MELSEC iQ-R Series R32ENCPU 65

Remediation

Refer to Mitsubishi Electric Advisory for patch, upgrade or suggested workaround information.

CVE-2022-40267

CVE-2022-40265