Vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds
CVE-2025-10259
Improper Validation of Specified Quantity in Input vulnerability in TCP Communication Function on Mitsubishi Electric Corporation MELSEC iQ-F Series CPU module allows a remote attacker to disconnect the connection by sending specially crafted TCP packets to cause a denial-of-service (DoS) condition on the products. There is no impact on connections other than the attacked one.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (34.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · 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-30mr/es-A — 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/es-A — 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
Weakness classification (CWE)
References
- www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-014_en.pdf (vendor-advisory)
- jvn.jp/vu/JVNVU92088475/ (government-resource)
- www.cisa.gov/news-events/ics-advisories/icsa-25-317-01 (government-resource)
Frequently asked questions
- What is CVE-2025-10259?
- CVE-2025-10259 is a medium-severity vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds, classified under Improper Validation of Specified Quantity in Input. CVSS score: 5.3/10. Published 2025-11-06.
- How severe is CVE-2025-10259?
- Medium severity. CVSS v3 base score is 5.3 out of 10.