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CVE-2025-3755

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CVE-2025-3755

Published: May 29, 2025

Modified: Aug 27, 2025

PUBLISHED

CVSS v3.1

9.1

CRITICAL

Description

Improper Validation of Specified Index, Position, or Offset in Input vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU modules allows a remote unauthenticated attacker to read information in the product, to cause a Denial-of-Service (DoS) condition in MELSOFT connection, or to stop the operation of the CPU module (causing a DoS condtion on the CPU module), by sending specially crafted packets. The product is needed to reset for recovery.

VendorProductVersions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-32MT/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-32MT/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-32MT/ESS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-32MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-32MR/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-32MR/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-64MT/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-64MT/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-64MT/ESS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-64MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-64MR/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-64MR/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-80MT/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-80MT/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-80MT/ESS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-80MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-80MR/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5U-80MR/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UC-32MT/D

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UC-32MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UC-64MT/D

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UC-64MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UC-96MT/D

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UC-96MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UC-32MT/DS-TS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UC-32MT/DSS-TS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UC-32MR/DS-TS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-24MT/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-24MT/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-24MT/ESS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-24MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-24MR/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-24MR/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-40MT/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-40MT/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-40MT/ESS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-40MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-40MR/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-40MR/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-60MT/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-60MT/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-60MT/ESS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-60MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-60MR/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-60MR/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-24MT/ES-A

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-24MR/ES-A

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-40MT/ES-A

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-40MR/ES-A

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-60MT/ES-A

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5UJ-60MR/ES-A

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-30MT/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-30MT/ESS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-30MR/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-40MT/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-40MT/ESS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-40MR/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-60MT/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-60MT/ESS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-60MR/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-80MT/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-80MT/ESS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-80MR/ES

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-30MT/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-30MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-30MR/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-40MT/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-40MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-40MR/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-60MT/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-60MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-60MR/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-80MT/DS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-80MT/DSS

affected
All versions

Mitsubishi Electric Corporation

MELSEC iQ-F Series FX5S-80MR/DS

affected
All versions

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

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