← Vulnerability feed

Vulnerability record · CVE-2021-26365 · published 9 May 2023

CVE-2021-26365: Amd ryzen 5 2400g firmware out-of-bounds read vulnerability

AAmd · Ryzen 5 2400g Firmware

Certain size values in firmware binary headers could trigger out of bounds reads during signature validation, leading to denial of service or potentially limited leakage of information about out-of-bounds memory contents.

8.2 CVSS 3.1 High EPSS 0.57% · top 55.0% CWE-125 · Out-of-bounds read
8.2CVSS 3.1 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
54Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Certain size values in firmware binary headers could trigger out of bounds reads during signature validation, leading to denial of service or potentially limited leakage of information about out-of-bounds memory contents.

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

Affected products

54 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-4001 Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001 Vendor Advisory

Track CVE-2021-26365 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

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

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%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%7.8CVE-2020-12931Amd enterprise driver vulnerabilityImproper parameters handling in the AMD Secure Processor (ASP) kernel may allow a privileged attacker to elevate their privileges potentially leading…EPSS 0.26%7.8CVE-2020-12930Amd enterprise driver vulnerabilityImproper parameters handling in AMD Secure Processor (ASP) drivers may allow a privileged attacker to elevate their privileges potentially leading to…EPSS 0.26%7.8CVE-2021-26384Amd ryzen 7 5700g firmware out-of-bounds read vulnerabilityA malformed SMI (System Management Interface) command may allow an attacker to establish a corrupted SMI Trigger Info data structure, potentially lea…EPSS 0.20%7.8CVE-2021-26317Amd radeon software vulnerabilityFailure to verify the protocol in SMM may allow an attacker to control the protocol and modify SPI flash resulting in a potential arbitrary code exec…EPSS 0.27%

Source: NIST National Vulnerability Database (record CVE-2021-26365), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.