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Status published
Critical
CVE-2025-3755
Information Disclosure and Denial-of-Service(DoS) Vulnerability in MELSEC iQ-F Series CPU module
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
Mitsubishi Electric Corporation
View all reports →Affected Software
MELSEC iQ-F Series FX5U-32MT/ES, MELSEC iQ-F Series FX5U-32MT/DS, MELSEC iQ-F Series FX5U-32MT/ESS, MELSEC iQ-F Series FX5U-32MT/DSS, MELSEC iQ-F Series FX5U-32MR/ES, MELSEC iQ-F Series FX5U-32MR/DS, MELSEC iQ-F Series FX5U-64MT/ES, MELSEC iQ-F Series FX5U-64MT/DS, MELSEC iQ-F Series FX5U-64MT/ESS, MELSEC iQ-F Series FX5U-64MT/DSS, MELSEC iQ-F Series FX5U-64MR/ES, MELSEC iQ-F Series FX5U-64MR/DS, MELSEC iQ-F Series FX5U-80MT/ES, MELSEC iQ-F Series FX5U-80MT/DS, MELSEC iQ-F Series FX5U-80MT/ESS, MELSEC iQ-F Series FX5U-80MT/DSS, MELSEC iQ-F Series FX5U-80MR/ES, MELSEC iQ-F Series FX5U-80MR/DS, MELSEC iQ-F Series FX5UC-32MT/D, MELSEC iQ-F Series FX5UC-32MT/DSS, MELSEC iQ-F Series FX5UC-64MT/D, MELSEC iQ-F Series FX5UC-64MT/DSS, MELSEC iQ-F Series FX5UC-96MT/D, MELSEC iQ-F Series FX5UC-96MT/DSS, MELSEC iQ-F Series FX5UC-32MT/DS-TS, MELSEC iQ-F Series FX5UC-32MT/DSS-TS, MELSEC iQ-F Series FX5UC-32MR/DS-TS, MELSEC iQ-F Series FX5UJ-24MT/ES, MELSEC iQ-F Series FX5UJ-24MT/DS, MELSEC iQ-F Series FX5UJ-24MT/ESS, MELSEC iQ-F Series FX5UJ-24MT/DSS, MELSEC iQ-F Series FX5UJ-24MR/ES, MELSEC iQ-F Series FX5UJ-24MR/DS, MELSEC iQ-F Series FX5UJ-40MT/ES, MELSEC iQ-F Series FX5UJ-40MT/DS, MELSEC iQ-F Series FX5UJ-40MT/ESS, MELSEC iQ-F Series FX5UJ-40MT/DSS, MELSEC iQ-F Series FX5UJ-40MR/ES, MELSEC iQ-F Series FX5UJ-40MR/DS, MELSEC iQ-F Series FX5UJ-60MT/ES, MELSEC iQ-F Series FX5UJ-60MT/DS, MELSEC iQ-F Series FX5UJ-60MT/ESS, MELSEC iQ-F Series FX5UJ-60MT/DSS, MELSEC iQ-F Series FX5UJ-60MR/ES, MELSEC iQ-F Series FX5UJ-60MR/DS, MELSEC iQ-F Series FX5UJ-24MT/ES-A, MELSEC iQ-F Series FX5UJ-24MR/ES-A, MELSEC iQ-F Series FX5UJ-40MT/ES-A, MELSEC iQ-F Series FX5UJ-40MR/ES-A, MELSEC iQ-F Series FX5UJ-60MT/ES-A, MELSEC iQ-F Series FX5UJ-60MR/ES-A, MELSEC iQ-F Series FX5S-30MT/ES, MELSEC iQ-F Series FX5S-30MT/ESS, MELSEC iQ-F Series FX5S-30MR/ES, MELSEC iQ-F Series FX5S-40MT/ES, MELSEC iQ-F Series FX5S-40MT/ESS, MELSEC iQ-F Series FX5S-40MR/ES, MELSEC iQ-F Series FX5S-60MT/ES, MELSEC iQ-F Series FX5S-60MT/ESS, MELSEC iQ-F Series FX5S-60MR/ES, MELSEC iQ-F Series FX5S-80MT/ES, MELSEC iQ-F Series FX5S-80MT/ESS, MELSEC iQ-F Series FX5S-80MR/ES, MELSEC iQ-F Series FX5S-30MT/DS, MELSEC iQ-F Series FX5S-30MT/DSS, MELSEC iQ-F Series FX5S-30MR/DS, MELSEC iQ-F Series FX5S-40MT/DS, MELSEC iQ-F Series FX5S-40MT/DSS, MELSEC iQ-F Series FX5S-40MR/DS, MELSEC iQ-F Series FX5S-60MT/DS, MELSEC iQ-F Series FX5S-60MT/DSS, MELSEC iQ-F Series FX5S-60MR/DS, MELSEC iQ-F Series FX5S-80MT/DS, MELSEC iQ-F Series FX5S-80MT/DSS, MELSEC iQ-F Series FX5S-80MR/DS
Vulnerable Versions:
All versions
Timeline
Official Publish:
May 29th, 2025
Last Modified:
August 27th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.