Privilege Escalation via Boot Service Misuse in AMD APCB SMM Driver

Publication date: 2026-04-16

Last updated on: 2026-06-30

Assigner: Advanced Micro Devices Inc.

Description

Incorrect use of boot service in the AMD Platform Configuration Blob (APCB) SMM driver could allow a privileged attacker with local access (Ring 0) to achieve privilege escalation potentially resulting in arbitrary code execution.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-04-16

Last Modified

2026-06-30

Generated

2026-07-06

AI Q&A

2026-04-16

EPSS Evaluated

2026-07-05

NVD

CVE-2025-54502

EUVD

EUVD-2025-209508

Affected Vendors & Products

Vendor	Product	Version / Range
amd	platform_configuration_blob	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-648	The product does not conform to the API requirements for a function call that requires extra privileges. This could allow attackers to gain privileges by causing the function to be called incorrectly.
CWE-668	The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.

Attack-Flow Graph

Executive Summary

This vulnerability involves the incorrect use of a boot service in the AMD Platform Configuration Blob (APCB) System Management Mode (SMM) driver. It could allow a privileged attacker who already has local access with Ring 0 privileges to escalate their privileges further, potentially enabling them to execute arbitrary code.

Impact Analysis

If exploited, this vulnerability could allow an attacker with existing high-level local access to gain even greater privileges on the affected system. This privilege escalation could lead to arbitrary code execution, which might compromise system integrity, confidentiality, and availability.

Hi! I’m here to help you understand CVE-2025-54502. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70