CVE-2025-61971 (GCVE-0-2025-61971)
Vulnerability from cvelistv5 – Published: 2026-05-13 03:02 – Updated: 2026-05-13 14:37
VLAI
EPSS
VEX
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 14:37 UTC
CWE
- CWE-1233 - Security-Sensitive Hardware Controls with Missing Lock Bit Protection
Assigner
References
1 reference
Impacted products
9 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| AMD | AMD EPYC™ 9004 Series Processors |
Unaffected:
GenoaPI_1.0.0.H
|
guessed | |
| AMD | AMD EPYC™ 7003 Series Processors |
Unaffected:
MilanPI-SP3_1.0.0.J
|
guessed | |
| AMD | AMD EPYC™ 9005 Series Processors |
Unaffected:
TurinPI_1.0.0.8
|
guessed | |
| AMD | AMD EPYC™ 8004 Series Processors |
Unaffected:
GenoaPI_1.0.0.H
|
guessed | |
| AMD | AMD EPYC™ Embedded 7003 Series Processors |
Unaffected:
EmbMilanPI-SP3 1.0.0.D
|
guessed | |
| AMD | AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa") |
Unaffected:
EmbGenoaPI-SP5 1.0.0.D
|
guessed | |
| AMD | AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo") |
Unaffected:
EmbGenoaPI-SP5 1.0.0.D
|
guessed | |
| AMD | AMD EPYC™ Embedded 8004 Series Processors |
Unaffected:
EmbGenoaPI-SP5 1.0.0.D
|
guessed | |
| AMD | AMD EPYC™ Embedded 9005 Series Processors |
Unaffected:
EmbeddedTurinPI_SP5_1004
|
guessed |
Date Public
2026-05-13 03:00
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"references": [
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"redhat_vex": {
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"id": "CVE-2025-61971",
"initial_release_date": "2025-01-01T00:00:00+00:00",
"product_status:known_affected": "7",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "microcode_ctl: Microcode: Loss of SEV-SNP guest integrity via NBIO register modification",
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"source": "SUSE CSAF VEX",
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"title": "SUSE CVE CVE-2025-61971",
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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