CVE-2025-54509

Severity CVSS v4.0:

MEDIUM

Type:

Unavailable / Other

Publication date:

09/06/2026

Last modified:

23/07/2026

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.

Impact

Vector 4.0

CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N CVSS v4.0 Severity and Metrics:

Base Score: 4.00 MEDIUM
Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N

Attack Vector (AV): Local
Attack Complexity (AC): Low
Attack Requirements (AT): Present
Privileges Required (PR): High
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): None
Availability (VA): None
Confidentiality (SC): None
Integrity (SI): High
Availability (SA): None

Base Score 4.0

4.00

Severity 4.0

MEDIUM

References to Advisories, Solutions, and Tools

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3039.html