Auth bypass in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds
CVE-2025-7405
Missing Authentication for Critical Function vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU module allows a remote unauthenticated attacker to read or write the device values of the product and stop the operation of the programs, since MODBUS/TCP in the products does not have authentication features.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (37.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
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
- www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-011_en.pdf (vendor-advisory)
- jvn.jp/vu/JVNVU90041458/ (government-resource)
- www.cisa.gov/news-events/ics-advisories/icsa-25-240-01 (government-resource)
Frequently asked questions
- What is CVE-2025-7405?
- CVE-2025-7405 is a high-severity vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds, classified under Missing Authentication for Critical Function. CVSS score: 7.3/10. Published 2025-09-01.
- How severe is CVE-2025-7405?
- High severity. CVSS v3 base score is 7.3 out of 10.