by Kastro
Paper/Archive/CVE-2021-46760

CVE-2021-46760

AMD 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT — A malicious or compromised UApp or ABL can send a malformed system call to the bootloader, which may result in an out-of-bounds memory ac…

EPSS 0.8%CVSS 9.8
critical.is priorityof 100
41
CVSS 9.8 (NVD, ADP agree)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 55.8.558 × 2011.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

A malicious or compromised UApp or ABL can send a malformed system call to the bootloader, which may result in an out-of-bounds memory access that may potentially lead to an attacker leaking sensitive information or achieving code execution.

Affected

ProductAffectedFixed inSource
3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDTvarious–CNA
Ryzen™ Threadripper™ PRO Processors “Castle Peak” WSvarious –CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisoryamd.com/en/corporate/product-security/bulletin/AMD-SB-4001