PT-2020-18630 · Mitsubishi · Melsec Iq-F Series Fx5U(C) Cpu

Published 2020-12-14 · Updated 2021-07-21 · CVE-2020-5665

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions MELSEC iQ-F series FX5U(C) CPU unit firmware versions 1.060 and earlier

Description The issue arises from improper handling of exceptional conditions, allowing an attacker to cause a denial-of-service (DoS) condition. This can be achieved by sending a specially crafted ARP packet, affecting program execution and communication.

Recommendations For MELSEC iQ-F series FX5U(C) CPU unit firmware versions 1.060 and earlier, update to a version later than 1.060 to resolve the issue.

Fix

Related Identifiers

CVE-2020-5665

Affected Products

Melsec Iq-F Series Fx5U(C) Cpu

References · 6

• https://osv.dev/vulnerability/CVE-2020-5665 · Vendor Advisory
• https://mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdf · Vendor Advisory
• https://mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-5665 · Security Note
• https://jvn.jp/vu/JVNVU95638588/index.html · Note
• https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01 · Note