CVE-2023-20518

LOW

BIOS/UEFI - Info Disclosure

Title source: llm
STIX 2.1

Description

Incomplete cleanup in the ASP may expose the Master Encryption Key (MEK) to a privileged attacker with access to the BIOS menu or UEFI shell and a memory exfiltration vulnerability, potentially resulting in loss of confidentiality.

Scores

CVSS v3 1.9
EPSS 0.0005
EPSS Percentile 16.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-459
Status published
Products (31)
AMD/AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics ComboAM4V1 1.0.0.A
AMD/AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics ComboAM4V2 1.2.0.A
AMD/AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics PicassoPI-FP5 1.0.0.F
AMD/AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics PollockPI-FT5 1.0.0.5
AMD/AMD EPYC™ 9004 Series Processors GenoaPI 1.0.0.4
AMD/AMD Ryzen™ 3000 Series Desktop Processors ComboAM4V1 1.0.0.A
AMD/AMD Ryzen™ 3000 Series Desktop Processors ComboAM4V2 1.2.0.A
AMD/AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics PicassoPI-FP5 1.0.0.F
AMD/AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics CezannePI-FP6 1.0.0.E
AMD/AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics ComboAM4V2 1.2.0.A
... and 21 more
Published Aug 13, 2024
Tracked Since Feb 18, 2026