CVE-2026-55116
Critical
Description
A malicious actor with access to the network and under certain network configurations could exploit an Improper Access Control vulnerability found in certain devices running UniFi OS to make unauthorized changes to such UniFi OS devices.
SeverityCritical
CVSS9.0
Exploit probability—
ProductUi Unifi Connect
PublishedJul 2, 2026
First seenJul 2, 2026
Weakness typeCWE-284Improper access control
How to fix
Update
- ui unifi_connect3.4.20 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ui unifi_connect | v < 3.4.20 | 3.4.20 |
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