Home/CVE/Failure to validate the length fields of the ASP (AMD Secure Processor) sensor fusion hub headers may allow an attacker
CVE

CVE-2021-46753

Failure to validate the length fields of the ASP (AMD Secure Processor) sensor fusion hub headers may allow an attacker

Failure to validate the length fields of the ASP (AMD Secure Processor) sensor fusion hub headers may allow an attacker with a malicious Uapp or ABL to map the ASP sensor fusion hub region and overwrite data structures leading to a potential loss of confidentiality and integrity.

CRITICAL · CVSS 9.1 EPSS 0.00399
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Affected Products & Versions

37
amd ryzen 6600h firmwareall versions
amd ryzen 6600hs firmwareall versions
amd ryzen 6600u firmwareall versions
amd ryzen 6800h firmwareall versions
amd ryzen 6800hs firmwareall versions
amd ryzen 6800u firmwareall versions
amd ryzen 6900hs firmwareall versions
amd ryzen 6900hx firmwareall versions
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Scoring & Timeline

9.1
CRITICAL · CVSS v3.1 · psirt@amd.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 May 2023 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001Vendor Advisory
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