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Fencer Vulns
high 7.8

CVE-2021-3439 json

HP has identified a potential vulnerability in BIOS firmware of some Workstation products.

published 2023-01-30 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26765

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

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

Patch / fix

  • hp 340_g3_firmware f.52
  • hp 340_g4_firmware f.62
  • hp 346_g3_firmware f.52
  • hp 346_g4_firmware f.50
  • hp 348_g3_firmware f.52
  • hp 348_g4_firmware f.62
  • hp elite_dragonfly_firmware 01.09.00
  • hp elite_dragonfly_g2_firmware 01.04.01
  • hp elite_dragonfly_max_firmware 01.04.01
  • hp elite_x2_1012_g1_firmware 1.52
  • hp elite_x2_1012_g1_tablet_firmware 1.52
  • hp elite_x2_1012_g2_firmware 1.39
  • hp elite_x2_1013_g3_firmware 01.16.00
  • hp elite_x2_g4_firmware 01.09.00
  • hp elitebook_1030_g1_firmware 1.52
  • hp elitebook_1040_g3_firmware 1.52
  • hp elitebook_1040_g4_firmware 1.39
  • hp elitebook_1050_g1_firmware 1.16
  • hp elitebook_820_g3_firmware 1.52
  • hp elitebook_820_g4_firmware 1.39

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
19 mo ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • HP Inc. HP PC BIOS

Classification

Weakness
  • CWE-269 Improper Privilege Management

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.