CVE-2021-3439

CVE-2021-3439 is a high-severity vulnerability in Hp 340 G3 Firmware with a CVSS 3.x base score of 7.8. 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-269.

Key facts

• Severity: High (CVSS 3.x base score 7.8)
• EPSS exploit prediction: 0% (7th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-269
• Affected product: Hp 340 G3 Firmware
• Published: 2023-02-01
• Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2021-3439?

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

How severe is CVE-2021-3439?

CVE-2021-3439 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-3439 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3439?

CVE-2021-3439 primarily affects Hp 340 G3 Firmware. In total, 377 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-3439?

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-2021-3439 published?

CVE-2021-3439 was published on 2023-02-01 and last updated on 2026-06-17.

References

• https://support.hp.com/us-en/document/ish_3982318-3982351-16/hpsbhf03735

Affected products (377)

• cpe:2.3:o:hp:340_g3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:340_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:346_g3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:346_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:348_g3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:348_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elite_dragonfly_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elite_dragonfly_g2_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elite_dragonfly_max_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elite_x2_1012_g1_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elite_x2_1012_g1_tablet_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elite_x2_1012_g2_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elite_x2_1013_g3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elite_x2_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_1030_g1_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_1040_g3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_1040_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_1050_g1_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_820_g3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_820_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_828_g3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_828_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_830_g5_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_830_g6_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_830_g7_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_836_g5_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_836_g6_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_840_g3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_840_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_840_g5_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_840_g5_healthcare_edition_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_840_g6_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_840_g6_healthcare_edition_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_840_g7_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_840r_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_846_g5_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_848_g3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_848_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_850_g3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:elitebook_850_g4_firmware:*:*:*:*:*:*:*:*

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