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Medium · 6.3 Public exploit CVE-2019-0986 EUVD-2019-1717GHSA-c792-8wx7-j3v9

Windows User Profile Service Elevation of Privilege Vulnerability

Published Jun 12, 2019 · Updated May 20, 2025 · Assigned by microsoft

Description

An elevation of privilege vulnerability exists when the Windows User Profile Service (ProfSvc) improperly handles symlinks. An attacker who successfully exploited this vulnerability could delete files and folders in an elevated context.
To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and delete files or folders of their choosing.
The security update addresses the vulnerability by correcting how the Windows User Profile Service handles symlinks.

Affected products

VendorProductAffectedFixed
Microsoft Windows 10 Version 1703 10.0.0 – < publication publication
Microsoft Windows 10 Version 1803 10.0.0 – < publication publication
Microsoft Windows Server, version 1803 (Server Core Installation) 10.0.0 – < publication publication
Microsoft Windows 10 Version 1809 10.0.17763.0 – < publication, 10.0.0 – < publication publication
Microsoft Windows Server 2019 10.0.17763.0 – < publication publication
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – < publication publication
Microsoft Windows 10 Version 1709 for 32-bit Systems 10.0.0 – < publication publication
Microsoft Windows 10 Version 1709 10.0.0 – < publication publication
Microsoft Windows 10 Version 1903 for 32-bit Systems 10.0.0 – < publication publication
Microsoft Windows 10 Version 1903 for x64-based Systems 10.0.0 – < publication publication
Microsoft Windows 10 Version 1903 for ARM64-based Systems 10.0.0 – < publication publication
Microsoft Windows Server, version 1903 (Server Core installation) 10.0.0 – < publication publication
Microsoft Windows 10 Version 1507 10.0.10240.0 – < publication publication
Microsoft Windows 10 Version 1607 10.0.14393.0 – < publication publication
Microsoft Windows Server 2016 10.0.14393.0 – < publication publication
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – < publication publication
Microsoft Windows 7 6.1.0 – < publication publication
Microsoft Windows 7 Service Pack 1 6.1.0 – < publication publication
Microsoft Windows 8.1 6.3.0 – < publication publication
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – < publication, 6.0.0 – < publication publication
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – < publication publication
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – < publication publication
Microsoft Windows Server 2008 R2 Systems Service Pack 1 6.1.0 – < publication publication
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – < publication publication
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – < publication publication
Microsoft Windows Server 2012 6.2.9200.0 – < publication publication
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – < publication publication
Microsoft Windows Server 2012 R2 6.3.9600.0 – < publication publication
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – < publication publication

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References