CVE-2021-3808

HIGHNVD 7.87.8—

7.8

Potential security vulnerabilities have been identified in the BIOS (UEFI Firmware) for certain HP PC products, which might allow arbitrary code execution. HP is releasing firmware updates to mitigate these potential vulnerabilities.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 19.6%
KEV: Not listed

Published

February 1, 2023

Last Modified

March 27, 2025

References (2)

hp-security-alert@hphttps://support.hp.com/us-en/document/ish_6184733-6184761-16/hpsbhf03788
af854a3a-2127-422b-91ae-364da2661108https://support.hp.com/us-en/document/ish_6184733-6184761-16/hpsbhf03788

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-269Improper Privilege Management

Data Freshness Timeline

(refreshed 15× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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Frequently asked(5)

What is CVE-2021-3808?

CVE-2021-3808 is a high vulnerability published on February 1, 2023. Potential security vulnerabilities have been identified in the BIOS (UEFI Firmware) for certain HP PC products, which might allow arbitrary code execution. HP is releasing firmware updates to mitigate these potential vulnerabilities.

When was CVE-2021-3808 disclosed?

CVE-2021-3808 was first published in the National Vulnerability Database on February 1, 2023, with the most recent update on March 27, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-3808 actively exploited?

CVE-2021-3808 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-3808?

CVE-2021-3808 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2021-3808?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-3808, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2021-3808

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-3808?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)