Skip to content
Fencer Intel
high 7.8

CVE-2021-39301 json

Potential vulnerabilities have been identified in UEFI firmware (BIOS) for some PC products which may allow escalation of privilege and arb…

published 4y ago modified last mo. also EUVD-2021-25662

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

Potential vulnerabilities have been identified in UEFI firmware (BIOS) for some PC products which may allow escalation of privilege and arbitrary code execution.

Patch / fix

  • hp z1_entry_tower_g5_workstation_firmware 02.12.00
  • hp z1_entry_tower_g6_workstation_firmware 02.10.00
  • hp z1_g8_tower_desktop_pc_firmware 02.07.00
  • hp z4_g4_workstation_(core-x)_firmware 02.75
  • hp z4_g4_workstation_(xeon_w)_firmware 02.75
  • hp z6_g4_workstation_firmware 02.75
  • hp z8_g4_workstation_firmware 02.75
  • hp engage_flex_mini_retail_system_firmware 02.10.00
  • hp mp9_g4_retail_system_firmware 02.18.00
  • hp elite_dragonfly_firmware 01.12.00
  • hp elite_dragonfly_g2_firmware 01.08.00
  • hp elite_dragonfly_max_firmware 01.08.00
  • hp elite_x2_1013_g3_firmware 01.19.00
  • hp elite_x2_g4_firmware 01.12.00
  • hp elite_x2_g8_tablet_firmware 01.08.00
  • hp elitebook_1050_g1_firmware 01.19.00
  • hp elitebook_830_g5_firmware 01.19.00
  • hp elitebook_830_g6_firmware 01.12.00
  • hp elitebook_830_g7_firmware 01.08.00
  • hp elitebook_830_g8_firmware 01.08.00

Is CVE-2021-39301 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last mo.

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-09).

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 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • n/a BUSINESS NOTEBOOK PCS BIOS; BUSINESS DESKTOP PCS BIOS; RETAIL POINT-OF-SALE SYSTEMS BIOS; WORKSTATIONS BIOS

Classification

Weakness
  • CWE-269 Improper Privilege Management

References

Sources

Fencer Intel 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.