CVE-2025-61971
MEDIUMCVSS 5.9/10EPSS 0.12%
Last modified
CVE-2025-61971 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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.. EPSS estimates a 0.12% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| AMD | AMD EPYC™ 9004 Series Processors | All versions |
| AMD | AMD EPYC™ 7003 Series Processors | All versions |
| AMD | AMD EPYC™ 9005 Series Processors | All versions |
| AMD | AMD EPYC™ 8004 Series Processors | All versions |
| AMD | AMD EPYC™ Embedded 7003 Series Processors | All versions |
| AMD | AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa") | All versions |
| AMD | AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo") | All versions |
| AMD | AMD EPYC™ Embedded 8004 Series Processors | All versions |
| AMD | AMD EPYC™ Embedded 9005 Series Processors | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2025-61971?
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.
How severe is CVE-2025-61971?
CVE-2025-61971 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.12% probability of exploitation in the next 30 days.
How do I fix CVE-2025-61971?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2025-61971?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST