CVE-2021-26386

HIGH

AMD Ryzen 3/5/7/9 Firmware - Out-of-bounds Write via Malformed Stage 2 Bootloader System Call

Title source: llm
STIX 2.1

Description

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

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