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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2025-52665

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.

CRITICAL 10.0EPSS 41.1%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 41.1%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

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
10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS
41.09% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-306
Affected
ui/unifi access
Source
support@hackerone.com
EPSS trend
0%23%45%31 October 2026: 41.09%31 October 202631 October 2026

EPSS 41.1% since 31 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.