Vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds
CVE-2025-5514
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.
EPSS: 0.006 (44.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-30mr/ds — versions All versions
- Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-30mr/es — versions All versions
- Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-30mt/ds — versions All versions
- Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-30mt/dss — versions All versions
- Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-30mt/es — versions All versions
- Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-30mt/ess — versions All versions
- Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-40mr/ds — versions All versions
- Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-40mr/es — versions All versions
- Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-40mt/ds — versions All versions
- Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-40mt/dss — versions All versions
Weakness classification (CWE)
References
- Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp (vendor-advisory)
- Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp (government-resource)
- Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp (government-resource)
Frequently asked questions
- What is CVE-2025-5514?
- CVE-2025-5514 is a medium-severity vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 5.3/10. Published 2025-08-25.
- How severe is CVE-2025-5514?
- Medium severity. CVSS v3 base score is 5.3 out of 10.