Permissions, Privileges, and Access Controls in Windows and Windows Server - CVE-2020-16940
Published: October 13, 2020
Vulnerability identifier: #VU47623
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-16940
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the way Windows User Profile Service (ProfSvc) handles junction points. A local user can create a malicious application, launch it on the system and delete files and folders in an elevated context.
To exploit this vulnerability, an attacker would first have to log on to the system.
How to mitigate CVE-2020-16940
Install update from vendor's website.