CVE-2021-46747
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk1th percentile - higher than 1% of all known CVEs
Summary
Insufficient granularity of access control in ASP (AMD Secure Processor) may allow an attacker with an untrusted user space application to map sensitive SMN apertures leading to a potential escalation of privileges.
Risk Assessment
An attacker could gain elevated privileges and access to critical system resources.
Recommendation
Apply the BIOS/firmware update from AMD that includes the access control fix.
Other vulnerabilities in AMD Secure Processor
See all- CVE-2023-31323High
Type confusion in the AMD Secure Processor (ASP) could allow an attacker to pass a malformed argument to the External Global Memory Interconnect Trusted Agent (XGMI TA) leading to a memory safety violation potentially resulting in loss of confidentiality, integrity, or availability.
- CVE-2023-20514High
The vulnerability in AMD Secure Processor (ASP) stems from improper handling of parameters, allowing a privileged attacker to pass an arbitrary memory value to functions in the trusted execution environment. This could lead to arbitrary code execution.
- CVE-2025-29951High
A buffer overflow in the AMD Secure Processor (ASP) bootloader allows an attacker to overwrite memory, potentially leading to privilege escalation and arbitrary code execution.
Original NVD description (English source)
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.