CVE-2021-26344highCWE-787

CVE-2021-26344: high-severity vulnerability in AMD Athlon™ 3000 Series Desktop Processors…

Published 13 Aug 2024 · Updated 18 Mar 2025

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.2epss 0.2%

An out of bounds memory write when processing the AMD PSP1 Configuration Block (APCB) could allow an attacker with access the ability to modify the BIOS image, and the ability to sign the resulting image, to potentially modify the APCB block resulting in arbitrary code execution.

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

Affected products

Related CVEs — AMD Athlon™ 3000 Series Desktop Processors…

In the same product, most dangerous first.

CVE-2023-31315HIGHCVE-2023-31315EPSS 0.6%CVE-2024-36348LOWCVE-2024-36348EPSS 0.3%CVE-2025-62619MEDIUMCVE-2025-62619EPSS 0.3%CVE-2025-52533HIGHCVE-2025-52533EPSS 0.3%CVE-2023-31364HIGHCVE-2023-31364EPSS 0.3%CVE-2024-0179HIGHCVE-2024-0179EPSS 0.2%

References

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3003.html