AMD EPYC 9004 Processors System Management Mode improper access control for volatile memory containing boot code

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in AMD EPYC 9004 Processors, EPYC 7003 Processors, EPYC 7002 Processors, EPYC 7001 Processors, EPYC 9005 Processors, Instinct MI300A, EPYC 9V64H Processor, Ryzen Threadripper PRO 3000WX Processors, Ryzen Threadripper PRO 5000 WX-Series Processors, Ryzen Threadripper 7000 Processors, Ryzen Threadripper PRO 7000 WX-Series Processors, Ryzen Threadripper 9000 Processors, Ryzen Threadripper PRO 9000 WX-Series Processors, EPYC Embedded 7003 Processors, EPYC Embedded 9004 Processors, EPYC Embedded 7002 Processors, EPYC Embedded 3000 Processors, EPYC Embedded 9005 Processors and EPYC Embedded 8004 Processors and classified as critical. This impacts an unknown function of the component System Management Mode. Such manipulation leads to improper access control for volatile memory containing boot code. This vulnerability is listed as CVE-2025-29950. The attack must be carried out locally. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in AMD EPYC 9004 Processors, EPYC 7003 Processors, EPYC 7002 Processors, EPYC 7001 Processors, EPYC 9005 Processors, Instinct MI300A, EPYC 9V64H Processor, Ryzen Threadripper PRO 3000WX Processors, Ryzen Threadripper PRO 5000 WX-Series Processors, Ryzen Threadripper 7000 Processors, Ryzen Threadripper PRO 7000 WX-Series Processors, Ryzen Threadripper 9000 Processors, Ryzen Threadripper PRO 9000 WX-Series Processors, EPYC Embedded 7003 Processors, EPYC Embedded 9004 Processors, EPYC Embedded 7002 Processors, EPYC Embedded 3000 Processors, EPYC Embedded 9005 Processors and EPYC Embedded 8004 Processors and classified as critical. Affected by this issue is an unknown code of the component System Management Mode. The manipulation with an unknown input leads to a improper access control for volatile memory containing boot code vulnerability. Using CWE to declare the problem leads to CWE-1274. The product conducts a secure-boot process that transfers bootloader code from Non-Volatile Memory (NVM) into Volatile Memory (VM), but it does not have sufficient access control or other protections for the Volatile Memory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Improper input validation in system management mode (SMM) could allow a privileged attacker to overwrite stack memory leading to arbitrary code execution.

The advisory is available at amd.com. This vulnerability is handled as CVE-2025-29950 since 03/12/2025. The exploitation is known to be difficult. Local access is required to approach this attack. Additional levels of successful authentication are necessary for exploitation. The technical details are unknown and an exploit is not available.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.4
VulDB Temp Score: 6.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper access control for volatile memory containing boot code
CWE: CWE-1274 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/12/2025 CVE reserved
02/11/2026 +336 days Advisory disclosed
02/11/2026 +0 days VulDB entry created
02/11/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2025-29950 (🔒)
GCVE (CVE): GCVE-0-2025-29950
GCVE (VulDB): GCVE-100-345398

Entryinfo

Created: 02/11/2026 05:06
Changes: 02/11/2026 05:06 (64)
Complete: 🔍
Cache ID: 216::103

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