What is CVE-2023-31351?

CVE-2023-31351 is a medium-severity vulnerability in Amd Epyc™ 7003 Series Processors, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2025-09-06.

How severe is CVE-2023-31351?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2023-31351 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Amd Epyc™ 7003 Series Processors

CVE-2023-31351

Improper restriction of operations in the IOMMU could allow a malicious hypervisor to access guest private memory resulting in loss of integrity.

Vulnerability class: Buffer Overflow

EPSS: 0.000 (5.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N.

Affected products

Amd Epyc™ 7003 Series Processors — versions Milan 100C
Amd Epyc™ 8004 Series Processors — versions Genoa 100C
Amd Epyc™ 9004 Series Processors — versions Genoa 100C
Amd Epyc™ Embedded 7003 Series Processors — versions EmbMilanPI-SP3 1.0.0.9
Amd Epyc™ Embedded 9004 Series Processors — versions EmbGenoaPI-SP5 1.0.0.7

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2023-31351?: CVE-2023-31351 is a medium-severity vulnerability in Amd Epyc™ 7003 Series Processors, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2025-09-06.
How severe is CVE-2023-31351?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-31351 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.