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

Severity

High

Analysis Summary

CVE-2021-20599

Mitsubishi Electric MELSEC iQ-R Series could allow a remote attacker to bypass security restrictions, caused by improper authorization validation. By obtaining credentials other than password, an attacker could exploit this vulnerability to log in to the CPU module.

Impact

  • Security Bypass

Affected Vendors

Mitsubishi Electric

Affected Products

  • R08/16/32/120SFCPU: all versions
  • R08/16/32/120PSFCPU: all versions

Remediation

Refer to CERT-Advisory for patch, upgrade, or suggested workaround information.

https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-011_en.pdf