Vulnerability · Published May 29, 2025 · Assigned by Mitsubishi
CVE-2025-3755Information Disclosure and Denial-of-Service(DoS) Vulnerability in MELSEC iQ-F Series CPU module
Critical 9.1
In plain English
A critical-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 0.9% (higher than 59% of all known vulnerabilities).
Official description
Improper Validation of Specified Index, Position, or Offset in Input vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU modules allows a remote unauthenticated attacker to read information in the product, to cause a Denial-of-Service (DoS) condition in MELSOFT connection, or to stop the operation of the CPU module (causing a DoS condtion on the CPU module), by sending specially crafted packets. The product is needed to reset for recovery.
Affected products (as reported)
Weakness: CWE-1285 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
References
- https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-003_en.pdf vendor-advisory
- https://jvn.jp/vu/JVNVU94070048/ government-resource
- https://www.cisa.gov/news-events/ics-advisories/icsa-25-153-03 government-resource