CVE-2021-26386
HIGHAMD Ryzen 3/5/7/9 Firmware - Out-of-bounds Write via Malformed Stage 2 Bootloader System Call
Title source: llmDescription
A malicious or compromised UApp or ABL may be used by an attacker to issue a malformed system call to the Stage 2 Bootloader potentially leading to corrupt memory and code execution.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_misc
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027
Scores
CVSS v3
7.8
EPSS
0.0005
EPSS Percentile
14.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (50)
amd/ryzen_3_2200u_firmware
amd/ryzen_3_2300u_firmware
amd/ryzen_3_3100_firmware
amd/ryzen_3_3300g_firmware
amd/ryzen_3_3300x_firmware
amd/ryzen_3_5125c_firmware
amd/ryzen_3_5400u_firmware
amd/ryzen_3_5425c_firmware
amd/ryzen_3_5425u_firmware
amd/ryzen_5300g_firmware
... and 40 more
Published
May 12, 2022
Tracked Since
Feb 18, 2026