CVE-2021-26333: AMD Chipset Driver Information Disclosure Vulnerability
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.
Security readout for executives and security teams
CVE-2021-26333 is a possible data leak in AMD's PSP chipset driver. A low-privileged local user may be able to interact with the driver and receive data from uninitialized physical memory pages. The provided sources do not give CVSS scoring or confirmed active exploitation. Exposure is most likely on systems running the affected AMD PSP Driver. The source bundle does not identify exact vulnerable driver versions, operating systems, or hardware models, so asset validation must be tied to AMD's advisory. Treat this as a moderate endpoint risk unless AMD guidance shows broad exposure in your fleet. It is not remotely exploitable based on the provided description, but local data leakage can matter on shared or privileged-use systems. Mitigation focus: Review AMD SB-1009 for affected versions and official remediation.; Update AMD chipset or PSP drivers only according to AMD guidance.; Prioritize shared workstations, developer systems, and high-value endpoints..
Prepared
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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cwe · medium confidence lookup
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
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CWE-200 · source CWE mapping
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.