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Rewterz Threat Advisory – ICS: Mitsubishi Electric MELSEC-F Series

Severity

High

Analysis Summary

CVE-2021-20596

A malicious attacker may cause a denial-of-service condition in communication with the product by sending specially crafted packets.

Impact

  • Denial of Service

Affected Vendors

Mitsubishi Electric

Affected Products

  • FX3U-ENET: Firmware Version 1.14 and prior
  • FX3U-ENET-L: Firmware Version 1.14 and prior
  • FX3U-ENET-P502: Firmware Version 1.14 and prior

Remediation

Refer to the following website for updates, patches, and workarounds at https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01