Vulnerability · Published Nov 6, 2025 · Assigned by Mitsubishi
CVE-2025-10259Denial-of-Service(DoS) Vulnerability in TCP Communication Function on MELSEC iQ-F Series CPU module
Medium 5.3
In plain English
A medium-severity security flaw in MELSEC iQ-F Series FX5S-30MR/ES from Mitsubishi Electric Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
Weakness: CWE-1284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
- https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-014_en.pdf vendor-advisory
- https://jvn.jp/vu/JVNVU92088475/ government-resource
- https://www.cisa.gov/news-events/ics-advisories/icsa-25-317-01 government-resource