A malicious actor with access to the management network could exploit a misconfiguration in UniFi’s door access
Source GCVE Database
Not known to be exploited · public detection template (Nuclei) · CVSS 10.0 Critical · fixed in 4.0.21 : patch affected systems as a priority.
Data as of 29 Oct 2026, 23:30 UTC
- Patch
- Available – fixed in 4.0.21
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 30 Oct 2025
Detectable: evidence found.
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
AI-suggested
Update the UniFi Access Application to version 4.0.21 or later to remediate this vulnerability. No other mitigation steps are indicated as the fix is available and should be applied promptly.
Description
A critical vulnerability in UniFi Access Application versions 3.3.22 through 3.4.31 allows a malicious actor with management network access to exploit a misconfiguration exposing a management API without proper authentication. This flaw enables complete compromise of confidentiality, integrity, and availability. The issue was fixed in version 4.0.21 and later.