Vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds
CVE-2025-7731
Cleartext Transmission of Sensitive Information vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU module allows a remote unauthenticated attacker to obtain credential information by intercepting SLMP communication messages, and read or write the device values of the product and stop the operations of programs by using the obtained credential information.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · 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/2025-012_en.pdf (vendor-advisory)
- jvn.jp/vu/JVNVU90041458/ (government-resource)
- www.cisa.gov/news-events/ics-advisories/icsa-25-240-02 (government-resource)
Frequently asked questions
- What is CVE-2025-7731?
- CVE-2025-7731 is a high-severity vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.5/10. Published 2025-09-01.
- How severe is CVE-2025-7731?
- High severity. CVSS v3 base score is 7.5 out of 10.