Race Condition in Windows USB Print Driver Allows Privilege Escalation

Executive Summary

CVE-2026-54996 is a race condition vulnerability in the Windows USB Print Driver. A race condition occurs when multiple processes or threads access a shared resource without proper synchronization, leading to unpredictable behavior.

In this case, the vulnerability allows an authorized attacker with local access to exploit the improper synchronization in the driver. By doing so, the attacker can elevate their privileges on the system, gaining higher levels of access than intended.

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Detection Guidance

The provided context does not include specific detection methods or commands for identifying this vulnerability on a network or system. This vulnerability is related to a race condition in the Windows USB Print Driver, which typically requires local access and specific conditions to exploit.

To detect potential exposure, you may check for the presence of affected Windows systems with USB printing functionality enabled. However, no direct commands or tools are mentioned in the provided resources.

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Impact Analysis

If you are affected by this vulnerability, an attacker with local access to your system could exploit it to elevate their privileges.

• The attacker could gain administrative or system-level privileges, allowing them to take full control of the affected system.
• This could lead to unauthorized access to sensitive data, installation of malware, or disruption of system operations.
• Since the vulnerability requires local access, the risk is higher in environments where multiple users share a system or where physical access to devices is not strictly controlled.

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Compliance Impact

This vulnerability could impact compliance with several standards and regulations, depending on the context of its exploitation.

• GDPR: If the vulnerability is exploited to gain unauthorized access to personal data, it could lead to a data breach. Under GDPR, organizations must implement appropriate security measures to protect personal data. Failure to patch or mitigate such vulnerabilities could result in non-compliance and potential fines.
• HIPAA: For organizations handling protected health information (PHI), this vulnerability could lead to unauthorized access to sensitive patient data. HIPAA requires covered entities to implement safeguards to protect PHI, and exploitation of this vulnerability could be seen as a failure to meet those requirements.
• Other standards like ISO 27001 or NIST frameworks require organizations to manage vulnerabilities and apply patches in a timely manner. Failure to address this vulnerability could result in non-compliance with these standards.

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Mitigation Strategies

The provided context does not include specific mitigation steps for this vulnerability. However, general best practices for addressing privilege escalation vulnerabilities include:

• Apply the latest security updates from Microsoft as soon as they are available. Refer to the Microsoft Security Update Guide for patches related to CVE-2026-54996.
• Restrict local access to systems to authorized users only, as this vulnerability requires local access to exploit.
• Monitor Microsoft's official communications for any additional guidance or workarounds related to this CVE.

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