CVE-2021-46747 - Vulnerability Details - OpenCVE

Insufficient granularity of access control in ASP (AMD Secure Processor) may allow an attacker with an untrusted user space application to map sensitive SMN (System Management Network) apertures leading to a potential escalation of privileges.

Attack Vector Local

Attack Complexity High

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4017.html
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6027.html

History

Mon, 01 Jun 2026 21:45:00 +0000

Type	Values Removed	Values Added
Title		Privilege Escalation via Weak SMN Access Control in AMD Secure Processor

Mon, 01 Jun 2026 20:30:00 +0000

Type	Values Removed	Values Added
Description		Insufficient granularity of access control in ASP (AMD Secure Processor) may allow an attacker with an untrusted user space application to map sensitive SMN (System Management Network) apertures leading to a potential escalation of privileges.
Weaknesses		CWE-1220
References		https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4017.html https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6027.html
Metrics		cvssV4_0 `{'score': 7.1, 'vector': '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'}`

MITRE

Status: PUBLISHED

Assigner: AMD

Published: 2026-06-01T19:01:27.968Z

Updated: 2026-06-01T19:01:27.968Z

Reserved: 2022-03-31T16:50:27.864Z

Link: CVE-2021-46747

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-06-01T21:16:23.103

Modified: 2026-06-01T21:16:23.103

Link: CVE-2021-46747

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-06-01T21:30:26Z

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