VULNERABILITY INTELLIGENCE

CVE-2021-26344

CVSS score7.2 HIGH
EPSS probability0.16%
CISA KEVNot currently listed
Published2024-08-13
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

Description

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.

Weakness classification

  • nvd@nist.gov: CWE-787
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-787

Primary references