AMD EPYC 9004 Processors access control

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability was found in AMD EPYC 9004 Processors, EPYC 7003 Processors, EPYC 9005 Processors, EPYC 8004 Processors, EPYC Embedded 7003 Processors, EPYC Embedded 9004 Processors, EPYC Embedded 9005 Processors and EPYC Embedded 8004 Processors. It has been classified as critical. The impacted element is an unknown function. This manipulation causes access control. This vulnerability is registered as CVE-2025-29939. The attack needs to be launched locally. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in AMD EPYC 9004 Processors, EPYC 7003 Processors, EPYC 9005 Processors, EPYC 8004 Processors, EPYC Embedded 7003 Processors, EPYC Embedded 9004 Processors, EPYC Embedded 9005 Processors and EPYC Embedded 8004 Processors. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Improper access control in secure encrypted virtualization (SEV) could allow a privileged attacker to write to the reverse map page (RMP) during secure nested paging (SNP) initialization, potentially resulting in a loss of guest memory confidentiality and integrity.

The advisory is shared at amd.com. This vulnerability is known as CVE-2025-29939 since 03/12/2025. The exploitation appears to be easy. An attack has to be approached locally. The exploitation requires an enhanced level of successful authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 300510 (Linux Distros Unpatched Vulnerability : CVE-2025-29939), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (300510). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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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: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Access control
CWE: 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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Nessus ID: 300510
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-29939

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
03/04/2026 +21 days VulDB entry last update

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2025-29939 (🔒)
GCVE (CVE): GCVE-0-2025-29939
GCVE (VulDB): GCVE-100-345385

Entryinfo

Created: 02/11/2026 04:58
Updated: 03/04/2026 23:59
Changes: 02/11/2026 04:58 (64), 03/04/2026 23:59 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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