CVE-2026-21634

A malicious actor with access to the adjacent network could overflow the UniFi Protect Application (Version 6.1.79 and earlier) discovery protocol causing it to restart.


Affected Products:
UniFi Protect Application (Version 6.1.79 and earlier). 
 
Mitigation:
Update your UniFi Protect Application to Version 6.2.72 or later.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.5 MEDIUM
ADJACENT_NETWORK
LOW
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
hackeroneCNA
6.5 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://community.ui.com/releases/Security-Advisory-Bulletin-058-058/6922ff20-8cd7-4724-8d8c-676458a2d0f9