CVE-2024-21947 Memory corruption in AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics
A privileged attacker can exploit improper input validation in AMD SMM to overwrite memory and execute arbitrary code at the SMM level.
- 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-2024-21947?
CVE-2024-21947 is a high-severity memory corruption vulnerability in AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics, published on 6 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper input validation in the system management mode (SMM) could allow a privileged attacker to overwrite arbitrary memory potentially resulting in arbitrary code execution at the SMM level.
Weakness: CWE-1220
Which versions are affected by CVE-2024-21947?
How do I fix CVE-2024-21947?
No fix has been published for CVE-2024-21947 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-2024-21947 being exploited?
There is no known exploitation of CVE-2024-21947 in the wild and no public exploit code.
Sources
Also known as GHSA-4jcj-3w4f-wvcm.