CVEvulnerability
CVE-2020-5665
7.4 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-12-14
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.4 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 3.3 LOW — AV:A/AC:L/Au:N/C:N/I:N/A:P
Description
Improper check or handling of exceptional conditions in MELSEC iQ-F series FX5U(C) CPU unit firmware version 1.060 and earlier allows an attacker to cause a denial-of-service (DoS) condition on program execution and communication by sending a specially crafted ARP packet.
Affected configurations
• mitsubishielectric melsec iq-f fx5u cpu firmware (<= 1.060)
References
- https://jvn.jp/vu/JVNVU95638588/index.html Third Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01 Third Party Advisory, US Government Resource
- https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdf Vendor Advisory
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdf Vendor Advisory
- https://jvn.jp/vu/JVNVU95638588/index.html Third Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01 Third Party Advisory, US Government Resource
- https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdf Vendor Advisory
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdf Vendor Advisory