CVE-2025-61971
AMD SEV-SNP MMIO Routing Configuration Modification Vulnerability
Description
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.
INFO
Published Date :
May 13, 2026, 4:17 a.m.
Last Modified :
June 17, 2026, 9:51 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-61971
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | MEDIUM | b58fc414-a1e4-4f92-9d70-1add41838648 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Enable lock bit protection for NBIO registers.
- Ensure proper access controls for MMIO routing.
- Apply vendor-specific security patches or updates.
Public PoC/Exploit Available at Github
CVE-2025-61971 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-61971.
| URL | Resource |
|---|---|
| https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3030.html |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-61971 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-61971
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Formal proof of insecurity of intra-handshake attestation
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-61971 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-61971 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'AMD', 'product': 'AMD EPYC™ 9004 Series Processors', 'versions': [{'status': 'unaffected', 'version': 'GenoaPI_1.0.0.H'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ 7003 Series Processors', 'versions': [{'status': 'unaffected', 'version': 'MilanPI-SP3_1.0.0.J'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ 9005 Series Processors', 'versions': [{'status': 'unaffected', 'version': 'TurinPI_1.0.0.8'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ 8004 Series Processors', 'versions': [{'status': 'unaffected', 'version': 'GenoaPI_1.0.0.H'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 7003 Series Processors', 'versions': [{'status': 'unaffected', 'version': 'EmbMilanPI-SP3 1.0.0.D'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa")', 'versions': [{'status': 'unaffected', 'version': 'EmbGenoaPI-SP5 1.0.0.D'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo")', 'versions': [{'status': 'unaffected', 'version': 'EmbGenoaPI-SP5 1.0.0.D'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 8004 Series Processors', 'versions': [{'status': 'unaffected', 'version': 'EmbGenoaPI-SP5 1.0.0.D'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 9005 Series Processors', 'versions': [{'status': 'unaffected', 'version': 'EmbeddedTurinPI_SP5_1004'}], 'defaultStatus': 'affected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-61971', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-05-13T14:37:29.592995Z'} -
New CVE Received by [email protected]
May. 13, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/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:X Added CWE CWE-1233 Added Reference https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3030.html