CVE-2021-3661

HIGH

HP Z1 All-in-one G3 Firmware - Code Injection

Title source: rule
STIX 2.1

Description

A potential security vulnerability has been identified in certain HP Workstation BIOS (UEFI firmware) which may allow arbitrary code execution. HP is releasing firmware mitigations for the potential vulnerability.

References (1)

Core 1

Scores

CVSS v3 8.4
EPSS 0.0025
EPSS Percentile 48.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-94
Status published
Products (20)
hp/z1_all-in-one_g3_firmware 01.31
hp/z238_microtower_firmware 01.83
hp/z240_small_form_factor_firmware 01.83
hp/z240_tower_firmware 01.83
hp/z2_mini_g3_firmware 01.83
hp/z2_mini_g4_firmware 01.08.01
hp/z2_mini_g5_firmware 01.03.00_rev_a
hp/z2_small_form_factor_g4_firmware 01.08.01
hp/z2_small_form_factor_g5_firmware 01.03.00_rev_a
hp/z2_small_form_factor_g8_firmware 01.03.00_rev_a
... and 10 more
Published Dec 12, 2022
Tracked Since Feb 18, 2026