CVE-2021-26333: AMD Chipset Driver

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

An information disclosure vulnerability exists in AMD Platform Security Processor (PSP) chipset driver. The discretionary access control list (DACL) may allow low privileged users to open a handle and send requests to the driver resulting in a potential data leak from uninitialized physical pages.

Affected products

• AMD Chipset Driver: before 3.08.17.735 (fixed in 3.08.17.735)
• AMD Psp Driver: before 5.17.0.0 (fixed in 5.17.0.0)

Published 2021-09-21. Last modified 2026-06-17.