ICSA-25-233-01 · Published 2025-09-09 · View on CISA ICS-CERT ↗

Mitsubishi Electric Corporation MELSEC iQ-F Series CPU module (Update A)

CVSS 5.3 MEDIUM

Risk Summary

Successful exploitation of this vulnerability could result in a remote attacker being able to delay the processing of the Web server function and prevent legitimate users from utilizing the Web server function by sending a specially crafted HTTP request.

CVEs (1)

CVE-2025-5514

Remediations

Mitsubishi Electric Corporation advises that there are no plans to release a fixed version. Mitsubishi Electric recommends users take the following mitigation measures to minimize the risk of exploiting this vulnerability:
Use a firewall or virtual private network (VPN), etc. to prevent unauthorized access when Internet access is required.
Use within a LAN and block access from untrusted networks and hosts through firewalls.
Use IP filter function to block access from untrusted hosts. For details on the IP filter function, please refer to the manual for each product: "13.1 IP Filter Function" in the MELSEC iQ-F FX5 User's Manual (Communication)
Restrict physical access to the affected products and the LAN that is connected by them.
Mitsubishi Electric Corporation recommends users contact their local Mitsubishi Electric representative with questions.
For more information, see Mitsubishi Electric's security advisory.

Affected Vendors

Mitsubishi Electric Corporation

Affected Products (75)

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-32MT/ES >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-32MT/DS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-32MT/ESS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-32MT/DSS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-32MR/ES >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-32MR/DS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-64MT/ES >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-64MT/DS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-64MT/ESS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-64MT/DSS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-64MR/ES >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-64MR/DS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-80MT/ES >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-80MT/DS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-80MT/ESS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-80MT/DSS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-80MR/ES >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5U-80MR/DS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UC-32MT/D >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UC-32MT/DSS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UC-64MT/D >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UC-64MT/DSS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UC-96MT/D >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UC-96MT/DSS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UC-32MT/DS-TS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UC-32MT/DSS-TS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UC-32MR/DS-TS >=1.060

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-24MT/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-24MT/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-24MT/ESS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-24MT/DSS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-24MR/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-24MR/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-40MT/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-40MT/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-40MT/ESS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-40MT/DSS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-40MR/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-40MR/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-60MT/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-60MT/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-60MT/ESS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-60MT/DSS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-60MR/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-60MR/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-24MT/ES-A vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-24MR/ES-A vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-40MT/ES-A vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-40MR/ES-A vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-60MT/ES-A vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5UJ-60MR/ES-A vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-30MT/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-30MT/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-30MT/ESS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-30MT/DSS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-30MR/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-30MR/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-40MT/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-40MT/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-40MT/ESS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-40MT/DSS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-40MR/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-40MR/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-60MT/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-60MT/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-60MT/ESS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-60MT/DSS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-60MR/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-60MR/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-80MT/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-80MT/DS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-80MT/ESS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-80MT/DSS vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-80MR/ES vers:all/*

Mitsubishi Electric Corporation · MELSEC iQ-F Series CPU module FX5S-80MR/DS vers:all/*

Affected Sectors

Critical Manufacturing

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