CVE-2021-46755

high-risk
Published 2023-05-09

Failure to unmap certain SysHub mappings in error paths of the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious bootloader to exhaust the SysHub resources resulting in a potential denial of service.

Do I need to act?

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0.21% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (20)

Ryzen 5500 Firmware
Ryzen 5500 Firmware
Ryzen 5600 Firmware
Ryzen 5600 Firmware
Ryzen 5600G Firmware
Ryzen 5600G Firmware
Ryzen 5600X Firmware
Ryzen 5600X Firmware
Ryzen 5700G Firmware
Ryzen 5700G Firmware
Ryzen 5700X Firmware
Ryzen 5700X Firmware
Ryzen 5800X3D Firmware
Ryzen 5800X3D Firmware
Ryzen 5800X Firmware
Ryzen 5800X Firmware
Ryzen 5900X Firmware
Ryzen 5900X Firmware
Ryzen 5950X Firmware
Ryzen 5950X Firmware

Affected Vendors

Amd

References (2)

Vendor Advisory https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001
Vendor Advisory https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001
52
/ 100
high-risk
Severity 26/34 · High
Exploitability 1/34 · Minimal
Exposure 25/34 · High