CVE-2025-52665

CRITICAL EXPLOITED NUCLEI

UI Unifi Access < 4.0.21 - Missing Authentication

Title source: rule

Description

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.

Nuclei Templates (1)

UniFi Access - Broken Access Control

CRITICALby theamanrawat,DhiyaneshDK

Shodan: http.html:"UniFi OS"

FOFA: body="UniFi OS"

References (1)

[Vendor Advisory] https://community.ui.com/releases/Security-Advisory-Bulletin-056/ce97352d-91cd-40a7-a2f4-2c73b3b30191

Scores

CVSS v3 10.0

EPSS 0.1168

EPSS Percentile 93.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Details

VulnCheck KEV 2026-01-16

CWE

CWE-306

Status published

Products (1)

ui/unifi_access 3.3.22 - 4.0.21

Published Oct 31, 2025

Tracked Since Feb 18, 2026