CVE-2023-25494 Memory corruption in Desktop BIOS, Smart Edge BIOS, ThinkStation BIOS
A local attacker with elevated privileges can exploit a memory corruption flaw in Lenovo BIOS to write to NVRAM variables.
- 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-2023-25494?
CVE-2023-25494 is a medium-severity memory corruption vulnerability in Lenovo Desktop BIOS, Smart Edge BIOS, ThinkStation BIOS, published on 5 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A potential vulnerability were reported in the BIOS of some Desktop, Smart Edge, and ThinkStation products that could allow a local attacker with elevated privileges to write to NVRAM variables.
Weakness: CWE-125
Which versions are affected by CVE-2023-25494?
How do I fix CVE-2023-25494?
No fix has been published for CVE-2023-25494 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-25494 being exploited?
There is no known exploitation of CVE-2023-25494 in the wild and no public exploit code.
Sources
Also known as GHSA-pp2x-pgm4-hc2c.