High 8.8Published Feb 16, 2022

CVE-2021-39300Potential vulnerabilities have been identified in UEFI firmware (BIOS) for some PC products which may allow escalation of privilege and arbitrary code execution.

Updated under an hour ago (Oct 28, 2026, 5:40 AM ET)

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It affects hp z1_entry_tower_g5_workstation_firmware and 59 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for hp z1_entry_tower_g5_workstation_firmware

Exploited in the last 30 days

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

CVSS: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-269
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Oct 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

hp z1_entry_tower_g5_workstation_firmware hp:z1_entry_tower_g5_workstation_firmware	before 02.12.00	NVD
hp z1_entry_tower_g6_workstation_firmware hp:z1_entry_tower_g6_workstation_firmware	before 02.10.00	NVD
hp z1_g8_tower_desktop_pc_firmware hp:z1_g8_tower_desktop_pc_firmware	before 02.07.00	NVD
hp z4_g4_workstation_(core-x)_firmware hp:z4_g4_workstation_(core-x)_firmware	before 02.75; before 02.75; before 02.75	NVD
hp z4_g4_workstation_(xeon_w)_firmware hp:z4_g4_workstation_(xeon_w)_firmware	before 02.75; before 02.75; before 02.75	NVD
hp z6_g4_workstation_firmware hp:z6_g4_workstation_firmware	before 02.75; before 02.75; before 02.75	NVD
hp z8_g4_workstation_firmware hp:z8_g4_workstation_firmware	before 02.75; before 02.75; before 02.75	NVD
hp engage_flex_mini_retail_system_firmware hp:engage_flex_mini_retail_system_firmware	before 02.10.00	NVD
hp mp9_g4_retail_system_firmware hp:mp9_g4_retail_system_firmware	before 02.18.00	NVD
hp elite_dragonfly_firmware hp:elite_dragonfly_firmware	before 01.12.00	NVD
1–10 of 60

References

References

https://support.hp.com/us-en/document/ish_5661066-5661090-16	patch, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.