CVE-2021-26387 Missing authorization in AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics
Privileged attackers with signing keys or UEFI access can bypass memory protections to compromise platform integrity on AMD processors.
- 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-2021-26387?
CVE-2021-26387 is a low-severity missing authorization vulnerability in AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics, published on 13 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD signing keys and the BIOS menu or UEFI shell to map DRAM regions in protected areas, potentially leading to a loss of platform integrity.
Weakness: CWE-863
Which versions are affected by CVE-2021-26387?
How do I fix CVE-2021-26387?
No fix has been published for CVE-2021-26387 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-26387 being exploited?
There is no known exploitation of CVE-2021-26387 in the wild and no public exploit code.
Sources
Also known as GHSA-mcm9-3rfg-2mqm.