CVE-2020-5668
7.5 · HIGHOverview
CVE-2020-5668 is a high-severity vulnerability affecting mitsubishielectric r00cpu_firmware. It was published on November 20, 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 modules (R00/01/02CPU firmware version '19' and earlier, R04/08/16/32/120 (EN) CPU firmware version '51' and earlier, R08/16/32/120SFCPU firmware version '22' and earlier, R08/16/32/120PCPU firmware version '25' and earlier, R08/16/32/120PSFCPU firmware version '06' and earlier, RJ71EN71 firmware version '47' and earlier, RJ71GF11-T2 firmware version '47' and earlier, RJ72GF15-T2 firmware version '07' and earlier, RJ71GP21-SX firmware version '47' and earlier, RJ71GP21S-SX firmware version '47' and earlier, and RJ71GN11-T2 firmware version '11' and earlier) allows a remote unauthenticated attacker to cause an error in a CPU unit and cause a denial-of-service (DoS) condition in execution of the program and its communication, or to cause a denial-of-service (DoS) condition in communication via the unit by receiving a specially crafted SLMP packet
Remediation
Check the references section for vendor advisories and patches from mitsubishielectric. Update r00cpu_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 | r00cpu_firmware | 0 | Affected |
| mitsubishielectric | r01cpu_firmware | 0 | Affected |
| mitsubishielectric | r02cpu_firmware | 0 | Affected |
| mitsubishielectric | r04cpu_firmware | 0 | Affected |
| mitsubishielectric | r08cpu_firmware | 0 | Affected |
| mitsubishielectric | r16cpu_firmware | 0 | Affected |
| mitsubishielectric | r32cpu_firmware | 0 | Affected |
| mitsubishielectric | r120cpu_firmware | 0 | Affected |
| mitsubishielectric | r08sfcpu_firmware | 0 | Affected |
| mitsubishielectric | r16sfcpu_firmware | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2020-5668?
CVE-2020-5668 is a high-severity vulnerability affecting mitsubishielectric r00cpu_firmware. It was published on November 20, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2020-5668?
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-2020-5668?
Check the references section for vendor advisories and patches from mitsubishielectric. Update r00cpu_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-2020-5668?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-5668 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
AI agents map your attack surface to find vulnerabilities like this one.
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