What’s Vulnerable › Vulnerabilities

CVE-2021-26333: AMD Chipset Driver Information Disclosure Vulnerability

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-21 · updated 2026-06-17
• Weakness: CWE-200

Description

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

How to fix

Upgrade to a fixed version: AMD Chipset Driver 3.08.17.735; AMD PSP Driver 5.17.0.0. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/164202/AMD-Chipset-Driver-Information-Disclosure-Memory-Leak.html
• http://seclists.org/fulldisclosure/2021/Sep/24
• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1009
• http://packetstormsecurity.com/files/164202/AMD-Chipset-Driver-Information-Disclosure-Memory-Leak.html
• http://seclists.org/fulldisclosure/2021/Sep/24
• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1009

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