How severe is CVE-2021-27430?

CVE-2021-27430 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-27430 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27430?

CVE-2021-27430 primarily affects Ge Ur Bootloader Binary. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-27430?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-27430 published?

CVE-2021-27430 was published on 2022-03-23 and last updated on 2026-06-17.

CVE-2021-27430

CVE-2021-27430 is a high-severity vulnerability in Ge Ur Bootloader Binary with a CVSS 3.x base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: High (CVSS 3.x base score 8.4)
CVSS v2: 4.6
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Ge Ur Bootloader Binary
Published: 2022-03-23
Last modified: 2026-06-17

Description

GE UR bootloader binary Version 7.00, 7.01 and 7.02 included unused hardcoded credentials. Additionally, a user with physical access to the UR IED can interrupt the boot sequence by rebooting the UR.

Frequently asked questions

What is CVE-2021-27430?: GE UR bootloader binary Version 7.00, 7.01 and 7.02 included unused hardcoded credentials. Additionally, a user with physical access to the UR IED can interrupt the boot sequence by rebooting the UR.
How severe is CVE-2021-27430?: CVE-2021-27430 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-27430 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27430?: CVE-2021-27430 primarily affects Ge Ur Bootloader Binary. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-27430?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-27430 published?: CVE-2021-27430 was published on 2022-03-23 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:ge:ur_bootloader_binary:7.00:*:*:*:*:*:*:*
cpe:2.3:a:ge:ur_bootloader_binary:7.01:*:*:*:*:*:*:*
cpe:2.3:a:ge:ur_bootloader_binary:7.02:*:*:*:*:*:*:*

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