PT-2026-48127 · Amd · Amd Secure Processor

Published 2026-06-09 · Updated 2026-06-09 · CVE-2025-54509

Positive Technologies (AI Summary)

CVSS v4.0

4.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions AMD Secure Processor (affected versions not specified)

Description Improper access control for the register interface in the input-output memory management unit (IOMMU) allows a privileged attacker, such as a malicious hypervisor, to cause non-coherent accesses by the AMD secure processor (ASP). This can desynchronize memory views between the Platform Security Processor (PSP) and the CPU, potentially resulting in loss of integrity and granting unauthorized read/write access to a confidential virtual machine.

Recommendations Apply the patches released by AMD.

Fix

Weakness Enumeration

CWE-1262

Related Identifiers

CVE-2025-54509

Affected Products

Amd Secure Processor

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2025-54509 · Security Note
• https://amd.com/en/resources/product-security/bulletin/AMD-SB-3039.html · Note
• https://twitter.com/shw3ta_shinde/status/2064393649471815788 · Twitter Post