CVE-2021-26344

HIGH

AMD EPYC 7003 Series Firmware < milanpi_1.0.0.5 - Out-of-bounds Write in APCB Processing

Title source: llm
STIX 2.1

Description

An out of bounds memory write when processing the AMD PSP1 Configuration Block (APCB) could allow an attacker with access the ability to modify the BIOS image, and the ability to sign the resulting image, to potentially modify the APCB block resulting in arbitrary code execution.

References (1)

Core 1
Core References

Scores

CVSS v3 7.2
EPSS 0.0008
EPSS Percentile 23.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-787
Status published
Products (50)
amd/epyc_7001_firmware
amd/epyc_7203_firmware < milanpi_1.0.0.5
amd/epyc_7203p_firmware < milanpi_1.0.0.5
amd/epyc_7232p_firmware < romepi_1.0.0.c
amd/epyc_7251_firmware
amd/epyc_7252_firmware < romepi_1.0.0.c
amd/epyc_7261_firmware
amd/epyc_7262_firmware < romepi_1.0.0.c
amd/epyc_7272_firmware < romepi_1.0.0.c
amd/epyc_7281_firmware
... and 40 more
Published Aug 13, 2024
Tracked Since Feb 18, 2026