Vulnerability Intelligence Report
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.
No Active Exploit Signals
CVSS Base Score
5.9
MEDIUM
EPSS Probability:0.12%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-1233 ↗CWE-1233 Security-Sensitive Hardware Controls with Missing Lock Bit Protection
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| AMD | AMD EPYC™ 9004 Series Processors | GenoaPI_1.0.0.H (unaffected) |
| AMD | AMD EPYC™ 7003 Series Processors | MilanPI-SP3_1.0.0.J (unaffected) |
| AMD | AMD EPYC™ 9005 Series Processors | TurinPI_1.0.0.8 (unaffected) |
| AMD | AMD EPYC™ 8004 Series Processors | GenoaPI_1.0.0.H (unaffected) |
| AMD | AMD EPYC™ Embedded 7003 Series Processors | EmbMilanPI-SP3 1.0.0.D (unaffected) |
| AMD | AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa") | EmbGenoaPI-SP5 1.0.0.D (unaffected) |
| AMD | AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo") | EmbGenoaPI-SP5 1.0.0.D (unaffected) |
| AMD | AMD EPYC™ Embedded 8004 Series Processors | EmbGenoaPI-SP5 1.0.0.D (unaffected) |
| AMD | AMD EPYC™ Embedded 9005 Series Processors | EmbeddedTurinPI_SP5_1004 (unaffected) |
Threat Intelligence Signals
EPSS Score
0.116%
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Advanced Micro Devices Inc. · Vendor · USA |
| Reserved | 2025-10-04T18:09:57 |
| Published | 2026-05-13T03:02:55 |
| Patch Date | 2026-05-13 |
| Last Updated | 2026-05-13T14:37:35 |
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