RCE in HP Z1 All-In-One G3
CVE-2021-3661
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (22.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- HP Z1 All-In-One G3
- HP Z1 All-In-One G3 Firmware — versions 01.31
- HP Z238 Microtower
- HP Z238 Microtower Firmware — versions 01.83
- HP Z240 Small Form Factor
- HP Z240 Small Form Factor Firmware — versions 01.83
- HP Z240 Tower
- HP Z240 Tower Firmware — versions 01.83
- HP Z2 Mini G3
- HP Z2 Mini G3 Firmware — versions 01.83
Weakness classification (CWE)
References
- support.hp.com/us-en/document/ish_5670997-5671021-16/hpsbhf03770 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-3661?
- CVE-2021-3661 is a high-severity vulnerability in HP Z1 All-In-One G3, classified under Code Injection. CVSS score: 8.4/10. Published 2022-12-12.
- How severe is CVE-2021-3661?
- High severity. CVSS v3 base score is 8.4 out of 10.