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Status published
Medium
CVE-2025-5514
Denial-of-Service(DoS) Vulnerability in Web server function on MELSEC iQ-F Series CPU module
Vulnerability Description
Improper Handling of Length Parameter Inconsistency vulnerability in web server function on Mitsubishi Electric Corporation MELSEC iQ-F Series CPU module allows a remote unauthenticated attacker 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.
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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Denial-of-Service Vulnerability in MELSEC iQ-F Series
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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:
1.060 and later, All versions
Timeline
Official Publish:
August 25th, 2025
Last Modified:
August 26th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.