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.

EPSS: 0.004 (33.8th 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

Weakness classification (CWE)

References

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.