CVE-2020-26186 Privilege escalation in CPG BIOS
A local attacker can overwrite UEFI RuntimeServices to execute arbitrary code in System Management Mode, requiring a BIOS upgrade.
- 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-2020-26186?
CVE-2020-26186 is a medium-severity vulnerability in Dell CPG BIOS, published on 8 Jan 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Dell Inspiron 5675 BIOS versions prior to 1.4.1 contain a UEFI BIOS RuntimeServices overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the RuntimeServices structure to execute arbitrary code in System Management Mode (SMM).
Which versions are affected by CVE-2020-26186?
It affects 1 product.
Products include Dell Inspiron 5675 Firmware.
How do I fix CVE-2020-26186?
No fix has been published for CVE-2020-26186 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-26186 being exploited?
There is no known exploitation of CVE-2020-26186 in the wild and no public exploit code.
Sources
Also known as GHSA-9rmr-65mh-rj57.