A malicious actor with access to the management network could exploit a misconfiguration in UniFi’s door access application, UniFi Access, that exposed a management API without proper authentication. This vulnerability was introduced in Version 3.3.22 and was fixed in Version 4.0.21 and later.
Affected Products:
UniFi Access Application (Version 3.3.22 through 3.4.31).
Mitigation:
Update your UniFi Access Application to Version 4.0.21 or later.