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Fencer Intel
high 7.8

CVE-2021-39299 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-2021-25660

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 31%
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 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
  • hp elitebook_836_g5_firmware 01.19.00
  • hp elitebook_836_g6_firmware 01.12.00
  • hp elitebook_840_aero_g8_firmware 01.08.00
  • hp elitebook_840_g5_firmware 01.19.00
  • hp elitebook_840_g5_healthcare_edition_firmware 01.19.00
  • hp elitebook_840_g6_firmware 01.12.00
  • hp elitebook_840_g6_healthcare_edition_firmware 01.12.00
  • hp elitebook_840_g7_firmware 01.08.00
  • hp elitebook_840_g8_firmware 01.08.00

Is CVE-2021-39299 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

0.37% chance of exploitation in the next 30 days, higher than 31% 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.