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Status published
Medium
CVE-2025-5241
Denial-of-Service Vulnerability in MELSEC iQ-F Series
Vulnerability Description
Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series allows a remote unauthenticated attacker to lockout legitimate users for a certain period by repeatedly attempting to login with incorrect passwords. The legitimate users will be unable to login until a certain period has passed after the lockout or until the product is reset.
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 FX5-CCLGN-MS
Vulnerable Versions:
All versions
Timeline
Official Publish:
July 11th, 2025
Last Modified:
July 11th, 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.