CVE-2021-3661: hp inc. hp workstation bios Code Injection
CVSS: 8.4v3.1HighModified
Published 21-11-2022Last modified 29-04-2025
Vulnerability summary
CVE-2021-3661 is a high (CVSS 8.4) Code Injection vulnerability in hp inc. hp workstation bios. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.2% of scored vulnerabilities.
CVSS score
8.4/10
010
High · v3.1 (CVE.org)EPSS score
0.32%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 21-11-2022PublishedVulnerability first disclosed.
- 29-04-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 8.4Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST8.4HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.32%
Chance of exploitation in the next 30 days
Percentile
23%
Versus all other CVEs
30-day change
0.00 pp
From 0.32% on 20-09-2026
20-09-202620-10-2026
EPSS score0.32%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Hp20 products
- z1_all-in-one_g3_firmware01.31
- z2_mini_g3_firmware01.83
- z2_mini_g4_firmware01.08.01
- z2_mini_g5_firmware01.03.00_rev_a
- z2_small_form_factor_g4_firmware01.08.01
Hp inc.1 product
- hp workstation biosSee HP Security Bulletin reference for affected versions.
2 vendors · 21 products