CVE-2021-46775 Memory corruption in 2nd Gen AMD EPYC™
An attacker with physical access can exploit improper input validation in AMD EPYC firmware to overwrite memory, potentially achieving arbitrary code execution.
- 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-2021-46775?
CVE-2021-46775 is a medium-severity memory corruption vulnerability in Amd Epyc 7232p Firmware, published on 9 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper input validation in ABL may enable an attacker with physical access, to perform arbitrary memory overwrites, potentially leading to a loss of integrity and code execution.
Weakness: CWE-20
Which versions are affected by CVE-2021-46775?
It affects 48 products.
Products include Amd Epyc 7232p Firmware, Amd Epyc 7252 Firmware, Amd Epyc 7262 Firmware, Amd Epyc 7272 Firmware, Amd Epyc 7282 Firmware, Amd Epyc 72f3 Firmware and 42 more.
How do I fix CVE-2021-46775?
No fix has been published for CVE-2021-46775 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-2021-46775 being exploited?
There is no known exploitation of CVE-2021-46775 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 7232p Firmware
Sources
Also known as GHSA-cjrw-8gr4-q7xf.