CVE-2020-5666 - CVE House

Back to Database

Status published High CVE-2020-5666

Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series CPU Modules...

7.5 CVSS

Vulnerability Description

Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series CPU Modules (R00/01/02CPU Firmware versions from '05' to '19' and R04/08/16/32/120(EN)CPU Firmware versions from '35' to '51') allows a remote attacker to cause an error in a CPU unit via a specially crafted HTTP packet, which may lead to a denial-of-service (DoS) condition in execution of the program and its communication.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-5666

Check My Exposure

Credits & Attribution

No credits recorded in the NVD database.

References

More from Mitsubishi Electric Corporation

View All →

Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric...

Information Disclosure Vulnerability in MELSEC iQ-F Series CPU module

Information Disclosure, Information Tampering, and Denial of Service (DoS) Vulnerability in MELSEC iQ-F Series CPU module

Information Tampering Vulnerability in Multiple Processes of GENESIS64, ICONICS Suite, MobileHMI, Hyper Historian, AnalytiX, IoTWorX, MC Works64, and GENESIS

Denial-of-Service(DoS) Vulnerability in Web server function on MELSEC iQ-F Series CPU module

Affected Vendor

Mitsubishi Electric Corporation

View all reports →

Affected Software

MELSEC iQ-R Series CPU Modules

Vulnerable Versions:

R00/01/02CPU Firmware versions from '05' to '19' and R04/08/16/32/120(EN)CPU Firmware versions from '35' to '51'

Timeline

Official Publish: November 16th, 2020

Last Modified: August 4th, 2024

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.