Advisory Details

This vulnerability allows local attackers to create a denial-of-service condition on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the User Profile Service. By creating a junction, an attacker can abuse the service to overwrite the contents of a chosen file. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

• 2020-11-11 - Vulnerability reported to vendor
• 2021-03-17 - Coordinated public release of advisory