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 Windows Installer Service. By creating a directory junction, an attacker can abuse the service to create a directory. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

• 2021-06-04 - Vulnerability reported to vendor
• 2021-09-16 - Coordinated public release of advisory