CVE-2021-26388 Information disclosure in Athlon™ Series
Improper BIOS directory validation allows attackers to read out-of-bounds memory, potentially causing denial of service and information disclosure on AMD processors.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-26388?
CVE-2021-26388 is a medium-severity vulnerability in Amd Epyc 7232p Firmware, published on 11 May 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper validation of the BIOS directory may allow for searches to read beyond the directory table copy in RAM, exposing out of bounds memory contents, resulting in a potential denial of service.
Weakness: CWE-125
Which versions are affected by CVE-2021-26388?
It affects 106 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 100 more.
How do I fix CVE-2021-26388?
Apply the vendor's patch.
Is CVE-2021-26388 being exploited?
There is no known exploitation of CVE-2021-26388 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 7232p Firmware
Sources
Also known as GHSA-m5c3-2jmp-mhm6.