How severe is CVE-2024-5477?

CVE-2024-5477 has a CVSS 4.0 base score of 7.3, rated high severity.

Is CVE-2024-5477 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-5477?

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-2024-5477 have an EU (EUVD) identifier?

Yes. CVE-2024-5477 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-54878.

When was CVE-2024-5477 published?

CVE-2024-5477 was published on 2025-08-13 and last updated on 2026-06-17.

CVE-2024-5477

CVE-2024-5477 is a high-severity vulnerability with a CVSS 4.0 base score of 7.3. 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-1256.

Key facts

Severity: High (CVSS 4.0 base score 7.3)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-54878
Weakness: CWE-1256
Published: 2025-08-13
Last modified: 2026-06-17

Description

A potential security vulnerability has been identified in the System BIOS for some HP PC products which may allow escalation of privilege, arbitrary code execution, denial of service, or information disclosure via a physical attack that requires specialized equipment and knowledge. HP is releasing firmware mitigation for the potential vulnerability.

Frequently asked questions

What is CVE-2024-5477?: A potential security vulnerability has been identified in the System BIOS for some HP PC products which may allow escalation of privilege, arbitrary code execution, denial of service, or information disclosure via a physical attack that requires specialized equipment and knowledge. HP is releasing firmware mitigation for the potential vulnerability.
How severe is CVE-2024-5477?: CVE-2024-5477 has a CVSS 4.0 base score of 7.3, rated high severity.
Is CVE-2024-5477 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-5477?: 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-2024-5477 have an EU (EUVD) identifier?: Yes. CVE-2024-5477 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-54878.
When was CVE-2024-5477 published?: CVE-2024-5477 was published on 2025-08-13 and last updated on 2026-06-17.

References

https://support.hp.com/us-en/document/ish_12878449-12878471-16/hpsbhf04043

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