CVE-2020-5665 - 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

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HIGH

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

Published Dec 14, 2020

7.4

HIGH

CVSS 3.1

EPSS 1.03%

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 products

Vendor Mitsubishi Electric Corporation Product MELSEC iQ-F series FX5U(C) CPU unit Default
n/a
- Version
  firmware version 1.060 and earlier
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Mitsubishi Electric Corporation

MELSEC iQ-F series FX5U(C) CPU unit

n/a

Version	Status	Constraints
firmware version 1.060 and earlier	affected	-

Remediation

No remediation recorded yet.

Weaknesses (0)

No CWE recorded.

References (4)

https://jvn.jp/vu/JVNVU95638588/index.html
x_refsource_MISCThird Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01
x_refsource_MISCThird Party AdvisoryUS Government Resource
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdf
x_refsource_MISCVendor Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdf
x_refsource_MISCVendor Advisory

Link	Providers	Tags
https://jvn.jp/vu/JVNVU95638588/index.html		x_refsource_MISCThird Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01		x_refsource_MISCThird Party AdvisoryUS Government Resource
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdf		x_refsource_MISCVendor Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdf		x_refsource_MISCVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner jpcert

Published Dec 14, 2020

Updated Aug 4, 2024

Reserved Jan 6, 2020

Link CVE-2020-5665

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2020-5665

Red Hat

Severity n/a

Public date n/a

Links CVE-2020-5665