CVE-2020-5666

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 14.42% Top 10%
Vendor Advisory mitsubishielectric.com
Affected: Mitsubishi Electric Corporation MELSEC iQ-R Series CPU Modules
Published at:
Updated at:

References

Link Tags
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-015_en.pdf mitigation vendor advisory
https://jvn.jp/jp/JVN44764844/index.html third party advisory
https://jvn.jp/en/jp/JVN44764844/index.html third party advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-317-01 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2020-5666?
CVE-2020-5666 has been scored as a high severity vulnerability.
How to fix CVE-2020-5666?
To fix CVE-2020-5666, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-5666 being actively exploited in the wild?
It is possible that CVE-2020-5666 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~14% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-5666?
CVE-2020-5666 affects Mitsubishi Electric Corporation MELSEC iQ-R Series CPU Modules.
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