Vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds
CVE-2025-3755
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.
EPSS: 0.008 (55.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
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-2025-3755?
- CVE-2025-3755 is a critical-severity vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds, classified under CWE-1285. CVSS score: 9.1/10. Published 2025-05-29.
- How severe is CVE-2025-3755?
- Critical severity. CVSS v3 base score is 9.1 out of 10.