CVE-2020-5666
7.5 · HIGHOverview
CVE-2020-5666 is a high-severity vulnerability affecting mitsubishielectric melsec_iq-r00_firmware. It was published on November 16, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from mitsubishielectric. Update melsec_iq-r00_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| mitsubishielectric | melsec_iq-r00_firmware | 05 | Affected |
| mitsubishielectric | melsec_iq-r01_firmware | 05 | Affected |
| mitsubishielectric | melsec_iq-r02_firmware | 05 | Affected |
| mitsubishielectric | melsec_iq-r04_firmware | 35 | Affected |
| mitsubishielectric | melsec_iq-r16_firmware | 35 | Affected |
| mitsubishielectric | melsec_iq-r08_firmware | 35 | Affected |
| mitsubishielectric | melsec_iq-r32_firmware | 35 | Affected |
| mitsubishielectric | melsec_iq-r120_firmware | 35 | Affected |
References
Frequently Asked Questions
What is CVE-2020-5666?
CVE-2020-5666 is a high-severity vulnerability affecting mitsubishielectric melsec_iq-r00_firmware. It was published on November 16, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2020-5666?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-5666?
Check the references section for vendor advisories and patches from mitsubishielectric. Update melsec_iq-r00_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-5666?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-5666 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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