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CVE-2025-54509

22
FAUCET Score

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.

First published: Jun 9, 2026Last modified: Jul 23, 2026

Impacted Technologies

VendorProductVersion(s)CPE
AMDAMD EPYC™ 8004 Series Processors
Range not provided by sourceCNA affecteddefault affected
AMDAMD EPYC™ 9004 Series Processors
Range not provided by sourceCNA affecteddefault affected
AMDAMD EPYC™ 9005 Series Processors
Range not provided by sourceCNA affecteddefault affected
AMDAMD EPYC™ Embedded 8004 Series Processors
Range not provided by sourceCNA affecteddefault affected
AMDAMD EPYC™ Embedded 9004 Series Processors (Formerly Codenamed "Bergamo")
Range not provided by sourceCNA affecteddefault affected

CVSS Data

CVSS version used by this source: 4.0

4.0MEDIUM

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
HIGH
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
HIGH
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.13%
Probability of exploitation in next 30 days
EPSS Percentile
2.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0013 is in the 29th percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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