CVE-2025-54509 Missing authorization in AMD EPYC™ 8004 Series Processors
A privileged attacker can exploit improper IOMMU access controls to cause non-coherent accesses by the AMD Secure Processor, compromising data integrity.
- 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-2025-54509?
CVE-2025-54509 is a medium-severity missing authorization vulnerability in AMD EPYC™ 8004 Series Processors, published on 9 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper access control for register interface in the Input-Output Memory Management Unit (IOMMU) could allow a privileged attacker to cause non-coherent accesses by the AMD Secure Processor (ASP), potentially resulting in loss of integrity.
Weakness: CWE-1262
Which versions are affected by CVE-2025-54509?
How do I fix CVE-2025-54509?
No fix has been published for CVE-2025-54509 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-2025-54509 being exploited?
There is no known exploitation of CVE-2025-54509 in the wild and no public exploit code.
Sources
Also known as GHSA-gchr-732q-fg34.