AMD Security Bulletin AMD-SB-3023, February 2026

Supermicro is aware of the potential vulnerabilities in AMD EPYC™ Processor platforms that affect I/O Memory Management Unit (IOMMU), AMD Secure Encrypted Virtualization – Secure Nested Paging (SEV-SNP), and other platform components that were found during audits performed internally and by third parties. This vulnerability affects BIOS in Supermicro H11, H12, H13 and H14 products.

CVE:

  • CVE-2025-52533
  • Severity: High

  • CVE-2025-29950
  • Severity: High

  • CVE-2024-36355
  • Severity: High

  • CVE-2025-29939
  • Severity: Medium

  • CVE-2025-0012
  • Severity: Medium

  • CVE-2025-52536
  • Severity: Medium

  • CVE-2024-21961
  • Severity: Medium

  • CVE-2025-29948
  • Severity: Medium

  • CVE-2024-21953
  • Severity: Medium

  • CVE-2025-29952
  • Severity: Medium

  • CVE-2025-52534
  • Severity: Medium

  • CVE-2025-54514
  • Severity: Medium

  • CVE-2025-48517
  • Severity: Medium

  • CVE-2025-0031
  • Severity: Medium

  • CVE-2024-36310
  • Severity: Medium

  • CVE-2025-29946
  • Severity: Medium

  • CVE-2025-48514
  • Severity: Medium

  • CVE-2025-0029
  • Severity: Low

  • CVE-2025-48509
  • Severity: Low

Affected products:

Supermicro BIOS on the server H11, H12, H13 and H14 motherboards.

AMD Motherboard GenerationBIOS Version with the fix
H11 – EPYC™ 7001/7002 seriesv 3.5
H12 – H12SSW-AN6 – EPYC™ 7002/7003 seriesv 3.4
H12 – H12SSW-iNR/NTR – EPYC™ 7002/7003 seriesv 3.5
H12 – H12SSW-iNL/NTL – EPYC™ 7002/7003 seriesv 3.5
H12 – H12DSG-O-CPU – EPYC™ 7002/7003 seriesv 3.5
H12 – H12DST-B – EPYC™ 7002/7003 seriesv 3.5
H12 – H12SST-PS – EPYC™ 7002/7003 seriesv 3.5
H12 – H12SSW-iN/NT – EPYC™ 7002/7003 seriesv 3.5
H12 – BH12SSi-M25 – EPYC™ 7002/7003 seriesv 3.5
H12 – H12DSU-iN – EPYC™ 7002/7003 seriesv 3.5
H12 – H12SSFF-AN6 – EPYC™ 7002/7003 seriesv 3.5
H12 – H12SSL-i/C/CT/NT – EPYC™ 7002/7003 seriesv 3.5
H12 – H12DSi-N6/NT6 – EPYC™ 7002/7003 seriesv 3.5
H12 – H12SSFR-AN6 – EPYC™ 7002/7003 seriesv 3.5
H12 – H12DSG-Q-CPU6 – EPYC™ 7002/7003 seriesv 3.5
H12 – H12SSG-AN6 – EPYC™ 7002/7003 seriesv 3.5
H12 – H12DGQ-NT6 – EPYC™ 7002/7003 seriesv 3.5
H12 – H12SSG-ANP6 – EPYC™ 7002/7003 seriesv 3.5
H12 – H12DGO-6 – EPYC™ 7002/7003 seriesv 3.5
H12 – H12DSU-iNR – EPYC™ 7002/7003 seriesv 3.5
H13 – H13SVW-N/NT – EPYC™ 8004 seriesv 1.5
H13 – H13SSW – EPYC™ 9004/9005 seriesv 3.8
H13 – H13DSH – EPYC™ 9004/9005 seriesv 3.8a
H13 – H13DSG-O-CPU – EPYC™ 9004/9005 seriesv 3.8a
H13 – H13SST-G/GC – EPYC™ 9004/9005 seriesv 3.6
H13 – H13SSL-N/NT – EPYC™ 9004/9005 seriesv 3.8
H13 – H13SSH – EPYC™ 9004/9005 seriesv 3.8
H13 – H13DSG-O-CPU-D – EPYC™ 9004 seriesv 3.7a
H13 – H13SSF – EPYC™ 9004/9005 seriesv 3.8
H13 – H13DSG-OM – EPYC™ 9004/9005 seriesv3.8
H14 – H14DSH – EPYC™ 9004/9005 seriesv 1.8a
H14 – H14SST-G – EPYC™ 9004/9005 seriesv 1.9
H14 – H14SST-GE – EPYC™ 9005 seriesv 1.1a
H14 – H14DSG-OD – EPYC™ 9004/9005 seriesv1.8
H14 – H14SHM – EPYC™ 9004/9005 seriesv 1.7
H14 – H14DST-F/FL – EPYC™ 9005 seriesv 1.7
H14 – H14DSG-O-CPU – EPYC™ 9004/9005 seriesv1.9
H14 – H14SSL-N/NT – EPYC™ 9004/9005 seriesv 1.7
H14 – H14DSG-OM – EPYC™ 9004/9005 seriesv1.2

Remediation:

  • All affected Supermicro motherboard SKUs will require a BIOS update to mitigate this potential vulnerability.
  • Updated BIOS firmware has been created to mitigate this potential vulnerability. Supermicro is currently testing and validating affected products. Please check Release Notes for the resolution.

Resources: