# CVE-2025-5241

## Summary

- **CVE ID:** CVE-2025-5241
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
- **CWE:** CWE-645
- **Published:** Jul 11, 2025
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-32MT/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-32MT/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-32MT/ESS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-32MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-32MR/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-32MR/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-64MT/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-64MT/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-64MT/ESS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-64MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-64MR/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-64MR/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-80MT/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-80MT/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-80MT/ESS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-80MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-80MR/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5U-80MR/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UC-32MT/D (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UC-32MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UC-64MT/D (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UC-64MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UC-96MT/D (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UC-96MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UC-32MT/DS-TS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UC-32MT/DSS-TS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UC-32MR/DS-TS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-24MT/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-24MT/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-24MT/ESS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-24MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-24MR/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-24MR/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-40MT/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-40MT/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-40MT/ESS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-40MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-40MR/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-40MR/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-60MT/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-60MT/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-60MT/ESS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-60MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-60MR/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-60MR/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-24MT/ES-A (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-24MR/ES-A (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-40MT/ES-A (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-40MR/ES-A (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-60MT/ES-A (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5UJ-60MR/ES-A (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-30MT/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-30MT/ESS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-30MR/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-40MT/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-40MT/ESS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-40MR/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-60MT/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-60MT/ESS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-60MR/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-80MT/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-80MT/ESS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-80MR/ES (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-30MT/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-30MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-30MR/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-40MT/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-40MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-40MR/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-60MT/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-60MT/DSS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5S-60MR/DS (All versions)
- Mitsubishi Electric Corporation — MELSEC iQ-F Series FX5-CCLGN-MS (All versions)

## References

- [CNA](https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-005_en.pdf)
- [CNA](https://www.cisa.gov/news-events/ics-advisories/icsa-25-184-04)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.39%
- **EPSS Percentile:** 32.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._