CVE-2024-36343

Out-of-Bounds Access in AMD System Management Mode Communication Buffer

Published May 19, 2026 CVSS 4.0 · 4.6 Medium EPSS < 1% KEV · Not listed
Description
Improper input validation in the System Management Mode (SMM) communications buffer could allow a privileged attacker to perform an out of bounds read or write to a limited section of the Top of Memory Segment (TSEG) memory region, potentially resulting in loss of confidentiality or integrity.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Amd
Amd epyc 4004
Amd epyc 4005
Amd ryzen 6000 Series Processors With Radeon Graphics
Amd ryzen 7000 Series Desktop Processors
Amd ryzen 7040 Series Mobile Processors With Radeon Graphics
Amd ryzen 7045 Series Mobile Processors With Radeon Graphics
Amd ryzen 8000 Series Desktop Processors
Amd ryzen 9000 Series Desktop Processors
Amd ryzen 9000hx Series Mobile Processors
Amd ryzen Ai 300 Series Processors
Amd ryzen Al Max+
Amd ryzen Embedded 7000 Series Processors
Amd ryzen Embedded 8000 Series Processors
Amd ryzen Embedded 9000 Series Processors
Amd ryzen Embedded V3000 Series Processors
Amd ryzen Threadripper 7000 Processors
Amd ryzen Threadripper Pro 7000 Wx-series Processors
Vendors & Products Amd
Amd epyc 4004
Amd epyc 4005
Amd ryzen 6000 Series Processors With Radeon Graphics
Amd ryzen 7000 Series Desktop Processors
Amd ryzen 7040 Series Mobile Processors With Radeon Graphics
Amd ryzen 7045 Series Mobile Processors With Radeon Graphics
Amd ryzen 8000 Series Desktop Processors
Amd ryzen 9000 Series Desktop Processors
Amd ryzen 9000hx Series Mobile Processors
Amd ryzen Ai 300 Series Processors
Amd ryzen Al Max+
Amd ryzen Embedded 7000 Series Processors
Amd ryzen Embedded 8000 Series Processors
Amd ryzen Embedded 9000 Series Processors
Amd ryzen Embedded V3000 Series Processors
Amd ryzen Threadripper 7000 Processors
Amd ryzen Threadripper Pro 7000 Wx-series Processors
Type Values Removed Values Added
Title Out-of-Bounds Access in AMD System Management Mode Communication Buffer
Type Values Removed Values Added
Description Improper input validation in the System Management Mode (SMM) communications buffer could allow a privileged attacker to perform an out of bounds read or write to a limited section of the Top of Memory Segment (TSEG) memory region, potentially resulting in loss of confidentiality or integrity.
Weaknesses CWE-124
References
Metrics cvssV4_0

{'score': 4.6, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}