How severe is CVE-2025-52665?

CVE-2025-52665 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-52665 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 41% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-52665?

CVE-2025-52665 affects Ui Unifi Access. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-52665?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-52665 have an EU (EUVD) identifier?

Yes. CVE-2025-52665 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37233.

When was CVE-2025-52665 published?

CVE-2025-52665 was published on 2025-10-31 and last updated on 2026-06-17.

CVE-2025-52665

CVE-2025-52665 is a critical-severity vulnerability in Ui Unifi Access with a CVSS 3.x base score of 10.0. Its EPSS exploit-prediction score of 41% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 41% (99th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-37233
Weakness: CWE-306
Affected product: Ui Unifi Access
Published: 2025-10-31
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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. 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.
How severe is CVE-2025-52665?: CVE-2025-52665 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-52665 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 41% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-52665?: CVE-2025-52665 affects Ui Unifi Access. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-52665?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-52665 have an EU (EUVD) identifier?: Yes. CVE-2025-52665 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37233.
When was CVE-2025-52665 published?: CVE-2025-52665 was published on 2025-10-31 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:ui:unifi_access:*:*:*:*:*:*:*:*

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