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Vulnerability record · CVE-2025-52665 · published 31 October 2025

CVE-2025-52665: Ui unifi access missing authentication for critical function vulnerability

Ui · Unifi Access

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.

10.0 CVSS 3.1 Critical EPSS 41% · top 1.4% CWE-306 · Missing authentication for critical function
10.0CVSS 3.1 base score
41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-52665), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.