PatchSiren

PatchSiren cyber security CVE debrief

CVE-2025-54502 AMD CVE debrief

CVE-2025-54502 is a HIGH-severity vulnerability in the AMD Platform Configuration Blob (APCB) SMM driver. A privileged attacker with local access (Ring 0) could exploit this vulnerability to achieve privilege escalation, potentially leading to arbitrary code execution. The vulnerability has a CVSS score of 7.1. The CVE was published on 2026-04-16 and last modified on 2026-06-30. AMD has released a security bulletin (AMD-SB-7054) addressing this issue. Red Hat has also provided information on this vulnerability through their security portal and a bug report in Bugzilla.

Vendor
AMD
Product
AMD EPYC™ 9004 Series Processors
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-16
Original CVE updated
2026-07-15
Advisory published
2026-04-16
Advisory updated
2026-07-15

Who should care

Organizations using AMD-based systems should prioritize patching this vulnerability. System administrators and security teams responsible for maintaining systems with AMD processors are advised to review the AMD security bulletin and apply necessary updates. Additionally, Red Hat users can find relevant information and potential patches through their security portals and Bugzilla reports.

Technical summary

The vulnerability is caused by the incorrect use of boot service in the AMD Platform Configuration Blob (APCB) SMM driver. This could allow a privileged attacker with local access (Ring 0) to achieve privilege escalation. The vulnerability's CVSS vector is CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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. CWE-668 and CWE-648 are associated with this vulnerability.

Defensive priority

High priority should be given to patching this vulnerability due to its potential for privilege escalation and arbitrary code execution. System administrators should review the AMD security bulletin (AMD-SB-7054) and apply necessary updates.

Recommended defensive actions

  • Review and apply the AMD security bulletin (AMD-SB-7054) updates.
  • Check Red Hat security portals and Bugzilla reports for relevant information and potential patches.
  • Inventory systems with AMD processors to ensure they are patched.
  • Monitor system logs for potential exploitation attempts.
  • Implement compensating controls to detect and prevent local privilege escalation attacks.

Evidence notes

The CVE record and NVD detail provide official information on this vulnerability. AMD's security bulletin (AMD-SB-7054) and Red Hat's security portal and Bugzilla reports offer additional context and mitigation strategies. The CVSS score and vector provide a standardized measure of the vulnerability's severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-54502 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-54502

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-54502 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-54502

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7054.html

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://access.redhat.com/security/cve/CVE-2025-54502

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

  • Source reference

    Unverified legacy reference

    URL: https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-54502.json

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.