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Vulnerability record · CVE-2021-26351 · published 12 May 2022

CVE-2021-26351: Amd ryzen 3 3100 firmware improper input validation vulnerability

AAmd · Ryzen 3 3100 Firmware

Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA (Direct Memory Access) read/write from/to invalid DRAM address that could result in denial of service.

5.5 CVSS 3.1 Medium EPSS 0.21% · top 90.1% CWE-20 · Improper input validation
5.5CVSS 3.1 base score, v2 4.9
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
49Affected 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 (Direct Memory Access) read/write from/to invalid DRAM address that could result in denial of service.

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

Affected products

49 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.

9.8CVE-2023-20596Amd ryzen 7 5700g firmware vulnerabilityImproper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbi…EPSS 1.0%9.8CVE-2022-23820Amd ryzen 9 3900 firmware improper input validation vulnerabilityFailure to validate the AMD SMM communication buffer may allow an attacker to corrupt the SMRAM potentially leading to arbitrary code execution.EPSS 0.70%9.8CVE-2022-23821Amd ryzen 9 3900 firmware vulnerabilityImproper access control in System Management Mode (SMM) may allow an attacker to write to SPI ROM potentially leading to arbitrary code execution.EPSS 0.99%8.8CVE-2023-20558Amd ryzen 7 5700g firmware vulnerabilityInsufficient control flow management in AmdCpmOemSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to an escalat…EPSS 0.67%8.8CVE-2023-20559Amd ryzen 7 5700g firmware vulnerabilityInsufficient control flow management in AmdCpmGpioInitSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to escal…EPSS 0.67%8.1CVE-2023-20571Amd ryzen 3 5100 firmware race condition vulnerabilityA race condition in System Management Mode (SMM) code may allow an attacker using a compromised user space to leverage CVE-2018-8897 potentially resu…EPSS 0.45%7.8CVE-2023-20565Amd ryzen 3 5100 firmware improper privilege management vulnerabilityInsufficient protections in System Management Mode (SMM) code may allow an attacker to potentially enable escalation of privilege via local access.EPSS 0.21%7.8CVE-2023-20563Amd ryzen 3 5100 firmware improper privilege management vulnerabilityInsufficient protections in System Management Mode (SMM) code may allow an attacker to potentially enable escalation of privilege via local access.EPSS 0.20%

Source: NIST National Vulnerability Database (record CVE-2021-26351), CISA KEV, FIRST EPSS (scores of 2026-10-01). This page is refreshed as NVD updates the record.