CVE-2021-27426
CRITICALDescription
GE UR IED firmware versions prior to version 8.1x with “Basic” security variant does not allow the disabling of the “Factory Mode,” which is used for servicing the IED by a “Factory” user.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Moderate risk: more likely to be exploited than 65% of all known CVEs.
References
Related Vulnerabilities
Other CWE-453 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-21411 | High | 8.8 | 2.6% | - | Fix |
| CVE-2024-49120 | High | 8.1 | 1.1% | - | Fix |
| CVE-2022-47197 | Medium | 5.4 | 1.0% | - | - |
| CVE-2022-47194 | Medium | 5.4 | 0.8% | - | - |
| CVE-2025-30206 | Critical | 9.8 | 0.8% | - | - |
| CVE-2022-3262 | High | 8.1 | 0.7% | - | - |
Common questions
How do I fix CVE-2021-27426?
Published advisories record a fix for 19 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2021-27426 being actively exploited?
Not that we know of. CVE-2021-27426 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.2% is the estimated probability that it will be exploited in the next 30 days. That is higher than 65% of all scored CVEs.
How severe is CVE-2021-27426?
CVE-2021-27426 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2021-27426 affect?
Published advisories record a fix for multilin b30 firmware (NVD), multilin b90 firmware (NVD), multilin c30 firmware (NVD), multilin c60 firmware (NVD), and 15 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.