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Vulnerability record · CVE-2021-26337 · published 16 November 2021

CVE-2021-26337: Amd epyc 7003 firmware vulnerability

AAmd · Epyc 7003 Firmware

Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA read from invalid DRAM address to SRAM resulting in SMU not servicing further requests.

5.5 CVSS 3.1 Medium EPSS 0.24% · top 86.1%
5.5CVSS 3.1 base score, v2 2.1
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
112Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA read from invalid DRAM address to SRAM resulting in SMU not servicing further requests.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

112 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027 Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-26337), CISA KEV, FIRST EPSS (scores of 2026-10-06). This page is refreshed as NVD updates the record.