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.
Metrics
CVSS 4.0 4.6/10
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| AMD | AMD EPYC™ 4004 | — |
| AMD | AMD EPYC™ 4005 | — |
| AMD | AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics | — |
| AMD | AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics | — |
| AMD | AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics | — |
| AMD | AMD Ryzen™ 7000 Series Desktop Processors | — |
| AMD | AMD Ryzen™ 9000HX Series Mobile Processors | — |
| AMD | AMD Ryzen™ AI MAX | — |
| AMD | AMD Ryzen™ AI 300 Series Processors | — |
| AMD | AMD Ryzen™ Threadripper™ 7000 Processors | — |
| AMD | AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors | — |
| AMD | AMD Ryzen™ 8000 Series Desktop Processors | — |
| AMD | AMD Ryzen™ 8000 Series Desktop Processors | — |
| AMD | AMD Ryzen™ 9000 Series Desktop Processors | — |
| AMD | AMD Ryzen™ 9000 Series Desktop Processors | — |
| AMD | AMD Ryzen™ Embedded V3000 Series Processors | — |
| AMD | AMD Ryzen™ Embedded 7000 Series Processors | — |
| AMD | AMD Ryzen™ Embedded 8000 Series Processors | — |
| AMD | AMD Ryzen™ Embedded 9000 Series Processors | — |
References
Timeline
- Published
- May 19, 2026
- Last modified
- Jul 24, 2026
- NVD status
- Awaiting Analysis