CVE-2021-26333

AMD Chipset Driver Information Disclosure Vulnerability

MEDIUM
5.5
CVSS Score
Published: September 21, 2021 at 10:49 AM UTC
Updated: June 17, 2026 at 03:43 AM UTC
2 products affected across 1 vendorPSP DriverChipset Driver

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.08.17.735
Affected range stops below 3.08.17.735, so it looks safe — our inference, not a vendor statement
v < 5.17.0.0PSP Driver ≤ v < 5.17.0.0
Affected range stops below 5.17.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200CWE-909

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