CVE-2021-27428
9.8 · CRITICALOverview
CVE-2021-27428 is a critical-severity vulnerability affecting ge multilin_b30_firmware. It was published on March 23, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
GE UR IED firmware versions prior to version 8.1x supports upgrading firmware using UR Setup configuration tool – Enervista UR Setup. This UR Setup tool validates the authenticity and integrity of firmware file before uploading the UR IED. An illegitimate user could upgrade firmware without appropriate privileges. The weakness is assessed, and mitigation is implemented in firmware Version 8.10.
Remediation
Check the references section for vendor advisories and patches from ge. Update multilin_b30_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 |
|---|---|---|---|
| ge | multilin_b30_firmware | >= 0, < 8.10 | Affected |
| ge | multilin_b90_firmware | >= 0, < 8.10 | Affected |
| ge | multilin_c60_firmware | >= 0, < 8.10 | Affected |
| ge | multilin_c70_firmware | >= 0, < 8.10 | Affected |
| ge | multilin_c95_firmware | >= 0, < 8.10 | Affected |
| ge | multilin_d30_firmware | >= 0, < 8.10 | Affected |
| ge | multilin_d60_firmware | >= 0, < 8.10 | Affected |
| ge | multilin_f35_firmware | >= 0, < 8.10 | Affected |
| ge | multilin_f60_firmware | >= 0, < 8.10 | Affected |
| ge | multilin_g30_firmware | >= 0, < 8.10 | Affected |
Frequently Asked Questions
What is CVE-2021-27428?
CVE-2021-27428 is a critical-severity vulnerability affecting ge multilin_b30_firmware. It was published on March 23, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2021-27428?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-27428?
Check the references section for vendor advisories and patches from ge. Update multilin_b30_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-2021-27428?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-27428 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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Browser-based exploitation validates findings with real proof-of-concept.
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