CVE-2025-54509: AMD IOMMU Improper Access Control Enables Privileged ASP Tampering
CVE-2025-54509 Published on June 9, 2026

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.

NVD

Vulnerability Analysis

CVE-2025-54509 can be exploited with local system access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
HIGH
User Interaction:
NONE

Weakness Type

Register Interface Allows Software Access to Sensitive Data or Security Settings

Memory-mapped registers provide access to hardware functionality from software and if not properly secured can result in loss of confidentiality and integrity.


Affected Versions

AMD EPYC™ 9004 Series Processors: AMD EPYC™ 9005 Series Processors: AMD EPYC™ 8004 Series Processors: AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa"): AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo"): AMD EPYC™ Embedded 8004 Series Processors: AMD EPYC™ Embedded 9005 Series Processors:

Exploit Probability

EPSS
0.13%
Percentile
2.76%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.