CVE-2022-26860 Memory corruption in CPG BIOS
A local attacker can exploit a stack-based buffer overflow in Dell BIOS to execute arbitrary code in System Management Mode, bypassing security checks.
- 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-2022-26860?
CVE-2022-26860 is a high-severity memory corruption vulnerability in Dell Chengming 3980 Firmware, published on 6 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Dell BIOS versions contain a stack-based buffer overflow vulnerability. A local attacker could exploit this vulnerability by sending malicious input via SMI to bypass security checks resulting in arbitrary code execution in SMM.
Which versions are affected by CVE-2022-26860?
It affects 399 products.
Products include Dell Alienware M15 R6 Firmware, Dell Chengming 3980 Firmware, Dell Chengming 3988 Firmware, Dell Chengming 3990 Firmware, Dell Chengming 3991 Firmware, Dell Edge Gateway 3000 Firmware and 393 more.
How do I fix CVE-2022-26860?
No fix has been published for CVE-2022-26860 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-2022-26860 being exploited?
There is no known exploitation of CVE-2022-26860 in the wild and no public exploit code.
Other vulnerabilities in Dell Chengming 3980 Firmware
Sources
Also known as GHSA-qxc9-cxmm-778r.