CVE-2019-0571 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists when the Windows Data Sharing Service improperly handles file operations, aka "Windows Data Sharing Service Elevation of Privilege Vulnerability." This affects Windows Server 2016, Windows 10, Windows Server 2019, Windows 10 Servers. This CVE ID is unique from CVE-2019-0572, CVE-2019-0573, CVE-2019-0574.
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Analysis
by VulDB Data Team • 10/19/2025
The vulnerability described in CVE-2019-0571 represents a critical elevation of privilege flaw within the Windows Data Sharing Service component that operates across multiple Windows operating systems including Windows Server 2016, Windows 10, Windows Server 2019, and Windows 10 Servers. This vulnerability stems from improper handling of file operations within the data sharing service framework, creating a pathway for malicious actors to escalate their privileges from standard user level to system level access. The flaw specifically manifests in how the service processes and manages file operations, allowing attackers to manipulate the underlying file system mechanisms to gain unauthorized administrative capabilities.
From a technical perspective, the vulnerability exploits weaknesses in the Windows Data Sharing Service's file operation handling routines, which are governed by the Common Weakness Enumeration framework under CWE-264. The service's failure to properly validate or sanitize file operations creates opportunities for privilege escalation attacks that align with the ATT&CK framework's privilege escalation tactics. Attackers can leverage this vulnerability by crafting malicious file operations that bypass normal access controls and security boundaries established by the operating system's security model. The flaw essentially allows unauthorized users to execute code with elevated privileges, potentially enabling full system compromise.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally undermines the security boundaries that protect Windows systems from unauthorized access. When exploited successfully, the vulnerability enables attackers to gain system-level privileges without requiring legitimate administrative credentials or authentication. This creates a significant risk for enterprise environments where the Data Sharing Service is actively deployed, as it allows attackers to bypass standard security controls and potentially access sensitive data, modify system configurations, or establish persistent access points. The vulnerability affects systems running Windows Server 2016, Windows 10, Windows Server 2019, and Windows 10 Servers, representing a substantial attack surface across multiple platform versions.
Mitigation strategies for CVE-2019-0571 should focus on immediate patch deployment as provided by Microsoft through their regular security updates, which address the underlying file operation handling flaws. System administrators should implement network segmentation to limit access to systems running the Data Sharing Service and consider disabling the service entirely if it is not required for business operations. Additionally, monitoring for unusual file operation patterns and implementing strict access controls can help detect potential exploitation attempts. The vulnerability's classification under CWE-264 and its alignment with ATT&CK privilege escalation techniques emphasize the importance of comprehensive security controls that go beyond simple patch management, including regular security assessments and monitoring of system integrity to prevent unauthorized privilege escalation scenarios.