CVE-2021-46747
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| amd | secure_processor | * |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability impact me? :
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.
Can you explain this vulnerability to me?
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.