CVE-2021-3661 Code injection in HP Workstation BIOS
Attackers can execute arbitrary code on HP Workstations via a vulnerability in the UEFI firmware, requiring firmware updates to mitigate.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-3661?
CVE-2021-3661 is a high-severity code injection vulnerability in HP Workstation BIOS, published on 21 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-94
Which versions are affected by CVE-2021-3661?
It affects 20 products.
Products include Hp Z1 All-in-One G3 Firmware, Hp Z238 Microtower Firmware, Hp Z240 Small Form Factor Firmware, Hp Z240 Tower Firmware, Hp Z2 Mini G3 Firmware, Hp Z2 Mini G4 Firmware and 14 more.
How do I fix CVE-2021-3661?
No fix has been published for CVE-2021-3661 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2021-3661 being exploited?
There is no known exploitation of CVE-2021-3661 in the wild and no public exploit code.
Sources
Also known as GHSA-8r2c-p9ww-m55w.