How severe is CVE-2023-43626?

CVE-2023-43626 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-43626 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-43626?

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.

Does CVE-2023-43626 have an EU (EUVD) identifier?

Yes. CVE-2023-43626 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-48026.

When was CVE-2023-43626 published?

CVE-2023-43626 was published on 2024-09-16 and last updated on 2026-06-17.

CVE-2023-43626

CVE-2023-43626 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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-284.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-48026
Weakness: CWE-284
Published: 2024-09-16
Last modified: 2026-06-17

Description

Improper access control in UEFI firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Frequently asked questions

What is CVE-2023-43626?: Improper access control in UEFI firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.
How severe is CVE-2023-43626?: CVE-2023-43626 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-43626 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-43626?: 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.
Does CVE-2023-43626 have an EU (EUVD) identifier?: Yes. CVE-2023-43626 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-48026.
When was CVE-2023-43626 published?: CVE-2023-43626 was published on 2024-09-16 and last updated on 2026-06-17.

References

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