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Vulnerability record · CVE-2021-26384 · published 14 July 2022

CVE-2021-26384: Amd ryzen 7 5700g firmware out-of-bounds read vulnerability

AAmd · Ryzen 7 5700g Firmware

A malformed SMI (System Management Interface) command may allow an attacker to establish a corrupted SMI Trigger Info data structure, potentially leading to out-of-bounds memory reads and writes when triggering an SMI resulting in a potential loss of resources.

7.8 CVSS 3.1 High EPSS 0.20% · top 90.8% CWE-125 · Out-of-bounds readCWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
52Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A malformed SMI (System Management Interface) command may allow an attacker to establish a corrupted SMI Trigger Info data structure, potentially leading to out-of-bounds memory reads and writes when triggering an SMI resulting in a potential loss of resources.

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

Affected products

52 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-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%8.2CVE-2022-23815Amd athlon silver 3050u firmware out-of-bounds write vulnerabilityImproper bounds checking in APCB firmware may allow an attacker to perform an out of bounds write, corrupting the APCB entry, potentially leading to …EPSS 0.16%8.2CVE-2021-26365Amd ryzen 5 2400g firmware out-of-bounds read vulnerabilityCertain size values in firmware binary headers could trigger out of bounds reads during signature validation, leading to denial of service or potenti…EPSS 0.57%7.8CVE-2023-20555Amd ryzen 3 3300 firmware out-of-bounds write vulnerabilityInsufficient input validation in CpmDisplayFeatureSmm may allow an attacker to corrupt SMM memory by overwriting an arbitrary bit in an attacker-cont…EPSS 0.32%7.8CVE-2021-26316Amd epyc 7h12 firmware improper input validation vulnerabilityFailure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in poten…EPSS 0.26%7.8CVE-2021-26392Amd enterprise driver out-of-bounds write vulnerabilityInsufficient verification of missing size check in 'LoadModule' may lead to an out-of-bounds write potentially allowing an attacker with privileges t…EPSS 0.27%

Source: NIST National Vulnerability Database (record CVE-2021-26384), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.