CVE-2022-4575 Security feature bypass in ThinkPad BIOS
Attackers with local elevated privileges can bypass Secure Boot due to improper write protection of UEFI variables in Lenovo ThinkPad BIOS.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-4575?
CVE-2022-4575 is a medium-severity vulnerability in Lenovo ThinkPad BIOS, published on 30 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability due to improper write protection of UEFI variables was reported in the BIOS of some ThinkPad models could allow an attacker with physical or local access and elevated privileges the ability to bypass Secure Boot.
Weakness: CWE-276
Which versions are affected by CVE-2022-4575?
It affects 13 products.
Products include Lenovo Thinkpad 25 Firmware, Lenovo Thinkpad L560 Firmware, Lenovo Thinkpad P50 Firmware, Lenovo Thinkpad P50s Firmware, Lenovo Thinkpad P70 Firmware, Lenovo Thinkpad T470 Firmware and 7 more.
How do I fix CVE-2022-4575?
No fix has been published for CVE-2022-4575 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-4575 being exploited?
There is no known exploitation of CVE-2022-4575 in the wild and no public exploit code.
Sources
Also known as GHSA-4m6r-j49h-94c5.