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CVE-2021-46759

Published: May 9, 2023Updated: Jan 27, 2025 Sources: CVE List NVDCWE-787
NVD MITRE
6.1CVSSMEDIUM
EPSS Score
0.3%
Top 80.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Improper syscall input validation in AMD TEE (Trusted Execution Environment) may allow an attacker with physical access and control of a Uapp that runs under the bootloader to reveal the contents of the ASP (AMD Secure Processor) bootloader accessible memory to a serial port, resulting in a potential loss of integrity.

CVSS Vector Breakdown

AV:PAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:PAttack Vector
Physical
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-787

Affected Products

Ryzen™ 2000 series Desktop Processors “Raven Ridge” AM4AMDHardware Firmware
Ryzen™ 5000 Series Desktop processor with Radeon™ Graphics “Cezanne” AM4AMDHardware Firmware
Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” ULPAMDHardware Firmware
Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”AMDHardware Firmware
Ryzen™ 2000 Series Mobile Processors “Raven Ridge” FP5AMDHardware Firmware
amdcommercialUSHardware Firmwareaka advanced micro devices
and 60 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001
amd.com

Timeline

Published
May 9, 2023
Last Updated
Jan 27, 2025

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