CVE-2021-40334
8.6 · HIGHOverview
CVE-2021-40334 is a high-severity vulnerability affecting hitachienergy fox615_firmware. It was published on December 2, 2021 and has a CVSS 3.1 base score of 8.6 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Missing Handler vulnerability in the proprietary management protocol (port TCP 5558) of Hitachi Energy FOX61x, XCM20 allows an attacker that exploits the vulnerability by activating SSH on port TCP 5558 to cause disruption to the NMS and NE communication. This issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.
Remediation
Check the references section for vendor advisories and patches from hitachienergy. Update fox615_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 |
|---|---|---|---|
| hitachienergy | fox615_firmware | >= 0, < r15a | Affected |
| hitachienergy | xcm20_firmware | >= 0, < r15a | Affected |
References
Frequently Asked Questions
What is CVE-2021-40334?
CVE-2021-40334 is a high-severity vulnerability affecting hitachienergy fox615_firmware. It was published on December 2, 2021 and has a CVSS 3.1 base score of 8.6 (HIGH).
How severe is CVE-2021-40334?
This vulnerability has a CVSS 3.1 base score of 8.6, 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-2021-40334?
Check the references section for vendor advisories and patches from hitachienergy. Update fox615_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-2021-40334?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-40334 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.
Automated penetration testing that runs continuously, not just quarterly.
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