CVE-2021-46747
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Insufficient Access Control in AMD Secure Processor Leads to Privilege Escalation

Publication date: 2026-06-01

Last updated on: 2026-06-01

Assigner: Advanced Micro Devices Inc.

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.
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Meta Information
Published
2026-06-01
Last Modified
2026-06-01
Generated
2026-06-22
AI Q&A
2026-06-02
EPSS Evaluated
2026-06-21
NVD
CVE-2021-46747
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
amd secure_processor *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-1220 The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets.
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Impact Analysis

The impact of this vulnerability is a potential escalation of privileges. An attacker with access to an untrusted user space application could exploit the insufficient access control to gain higher privileges than intended, possibly compromising system security.

Compliance Impact

The provided information does not specify how CVE-2021-46747 affects compliance with common standards and regulations such as GDPR or HIPAA.

Executive Summary

This vulnerability involves insufficient granularity of access control in the AMD Secure Processor (ASP). It may allow an attacker who has an untrusted user space application to map sensitive System Management Network (SMN) apertures. This mapping can potentially lead to an escalation of privileges.

Mitigation Strategies

To mitigate CVE-2021-46747, you should update to specific versions of AMD Software: PRO Edition.

  • For AMD Radeon PRO V520 and AMD Radeon PRO W5000 Series Graphics Products, update to version 25.Q3.1 (25.10.32) or later.
  • For AMD Radeon PRO W6000 Series Graphics Products, ensure you have the corresponding updated AMD Software: PRO Edition installed.
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