AMD EPYC 9004 Processors security-sensitive hardware controls with missing lock bit protection

CVSS Meta Temp Score
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CTI Interest Score
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3.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been 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 8004 Processors and EPYC Embedded 9005 Processors. This affects an unknown function. This manipulation causes security-sensitive hardware controls with missing lock bit protection. This vulnerability is handled as CVE-2025-61971. It is possible to launch the attack on the local host. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

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 8004 Processors and EPYC Embedded 9005 Processors. It has been declared as problematic. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a security-sensitive hardware controls with missing lock bit protection vulnerability. The CWE definition for the vulnerability is CWE-1233. The product uses a register lock bit protection mechanism, but it does not ensure that the lock bit prevents modification of system registers or controls that perform changes to important hardware system configuration. As an impact it is known to affect integrity, and availability. The summary by CVE is:

Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to modify MMIO routing configurations, potentially resulting in loss of SEV-SNP guest integrity.

The advisory is shared at amd.com. This vulnerability is known as CVE-2025-61971 since 10/04/2025. The exploitation appears to be easy. An attack has to be approached locally. The exploitation needs additional levels of successful authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 321176 (Linux Distros Unpatched Vulnerability : CVE-2025-61971), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202605-3302), Tenable (321176), EUVD (EUVD-2025-209811) and CERT Bund (WID-SEC-2026-1525). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • AMD Prozessor

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: 3.4
VulDB Meta Temp Score: 3.3

VulDB Base Score: 3.4
VulDB Temp Score: 3.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Security-sensitive hardware controls with missing lock bit protection
CWE: CWE-1233
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: 321176
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-61971

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/04/2025 CVE reserved
05/13/2026 +221 days Advisory disclosed
05/13/2026 +0 days VulDB entry created
06/19/2026 +37 days VulDB entry last update

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2025-61971 (🔒)
GCVE (CVE): GCVE-0-2025-61971
GCVE (VulDB): GCVE-100-363481
EUVD: 🔒
CERT Bund: WID-SEC-2026-1525 - AMD Prozessoren (EPYC und EPYC Embedded): Mehrere Schwachstellen
CNNVD: CNNVD-202605-3302 - AMD多款产品 安全漏洞

Entryinfo

Created: 05/13/2026 07:19
Updated: 06/19/2026 23:27
Changes: 05/13/2026 07:19 (63), 05/13/2026 07:28 (1), 05/14/2026 16:14 (6), 05/15/2026 11:19 (7), 06/19/2026 23:27 (2)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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