CVE-2020-5665

Severity Score

7.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Una comprobación o manejo inapropiado de condiciones excepcionales en la unidad CPU FX5U(C) de MELSEC iQ-F series versión 1.060 y anterior, permite a un atacante causar una condición de denegación de servicio (DoS) en una ejecución del programa y la comunicación mediante el envío de un paquete ARP especialmente diseñado.

*Credits: N/A

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-01-06 CVE Reserved
2020-12-14 CVE Published
2024-08-04 CVE Updated
2024-10-18 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (4)

URL	Tag	Source
https://jvn.jp/vu/JVNVU95638588/index.html	Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdf	2021-07-21
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdf	2021-07-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mitsubishielectric Search vendor "Mitsubishielectric"	Melsec Iq-f Fx5u Cpu Firmware Search vendor "Mitsubishielectric" for product "Melsec Iq-f Fx5u Cpu Firmware"	<= 1.060 Search vendor "Mitsubishielectric" for product "Melsec Iq-f Fx5u Cpu Firmware" and version " <= 1.060"	-	Affected	in	Mitsubishielectric Search vendor "Mitsubishielectric"	Melsec Iq-f Fx5u Cpu Search vendor "Mitsubishielectric" for product "Melsec Iq-f Fx5u Cpu"	-	-	Safe