CVE-2020-16940

HIGH

Windows - Privilege Escalation via User Profile Service Junction Point Handling

Title source: llm
STIX 2.1

Description

<p>An elevation of privilege vulnerability exists when the Windows User Profile Service (ProfSvc) improperly handles junction points. An attacker who successfully exploited this vulnerability could delete files and folders in an elevated context.</p> <p>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.</p> <p>The security update addresses the vulnerability by correcting how the Windows User Profile Service handles junction points.</p>

References (2)

Core 2
Core References
Third Party Advisory x_refsource_misc
https://www.zerodayinitiative.com/advisories/ZDI-20-1248/

Scores

CVSS v3 7.8
EPSS 0.0153
EPSS Percentile 71.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-269
Status published
Products (20)
microsoft/windows_10
microsoft/windows_10 1607
microsoft/windows_10 1709
microsoft/windows_10 1803
microsoft/windows_10 1809
microsoft/windows_10 1903
microsoft/windows_10 1909
microsoft/windows_10 2004
microsoft/windows_7
microsoft/windows_8.1
... and 10 more
Published Oct 16, 2020
Tracked Since Feb 18, 2026