CVE-2021-3439

HIGHNVD 7.87.8—

7.8

HP has identified a potential vulnerability in BIOS firmware of some Workstation products. Firmware updates are being released to mitigate these potential vulnerabilities.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 8.8%
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_3982318-3982351-16/hpsbhf03735
af854a3a-2127-422b-91ae-364da2661108https://support.hp.com/us-en/document/ish_3982318-3982351-16/hpsbhf03735

Weakness Classification(1)

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

CWE-269Improper Privilege Management

Data Freshness Timeline

(refreshed 13× 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.

2026-06-05 22:45 UTCepss_batch
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Frequently asked(5)

What is CVE-2021-3439?

CVE-2021-3439 is a high vulnerability published on February 1, 2023. HP has identified a potential vulnerability in BIOS firmware of some Workstation products. Firmware updates are being released to mitigate these potential vulnerabilities.

When was CVE-2021-3439 disclosed?

CVE-2021-3439 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-2021-3439 actively exploited?

CVE-2021-3439 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-3439?

CVE-2021-3439 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2021-3439?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-3439, 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.

Dependency Blast Radius

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CVE-2021-3439

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-3439?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)