A local privilege escalation vulnerability in SonicWall Directory Services Connector Windows MSI client 4.1.21 and earlier versions allows a local low-privileged user to gain system privileges through running the recovery feature.

SonicWall SSO-agent default configuration uses NetAPI to probe the associated IP's in the network, this client probing method allows a potential attacker to capture the password hash of the privileged user and potentially forces the SSO Agent to authenticate allowing an attacker to bypass firewall access controls.