CVE-2021-36283 Other in CPG BIOS
A local attacker can exploit improper input validation in Dell BIOS to execute arbitrary code in SMRAM, requiring a firmware patch.
- 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-2021-36283?
CVE-2021-36283 is a high-severity vulnerability in Dell Chengming 3990 Firmware, published on 28 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.
Weakness: CWE-20
Which versions are affected by CVE-2021-36283?
It affects 85 products.
Products include Dell Chengming 3990 Firmware, Dell Chengming 3991 Firmware, Dell G3 15 3500 Firmware, Dell G3 15 3590 Firmware, Dell G3 15 5500 Firmware, Dell Inspiron 3493 Firmware and 79 more.
How do I fix CVE-2021-36283?
No fix has been published for CVE-2021-36283 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-36283 being exploited?
There is no known exploitation of CVE-2021-36283 in the wild and no public exploit code.
Sources
Also known as GHSA-v8xg-293g-mwp4.