CVE-2026-55116 PUBLISHED

Assigner: hackerone
Reserved: 16.06.2026 Published: 02.07.2026 Updated: 02.07.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS Score: 9

Attack Vector	Network	Scope	Changed
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Ubiquiti Inc
Product	Dream Machines
Versions	Default: unaffected affected from 0 to 5.1.19 (excl.)

Vendor	Ubiquiti Inc
Product	Enterprise Fortress Gateway
Versions	Default: unaffected affected from 0 to 5.1.19 (excl.)

Vendor	Ubiquiti Inc
Product	Dream Wall
Versions	Default: unaffected affected from 0 to 5.1.19 (excl.)

Vendor	Ubiquiti Inc
Product	Dream Routers
Versions	Default: unaffected affected from 0 to 5.1.19 (excl.)

Vendor	Ubiquiti Inc
Product	Express 7
Versions	Default: unaffected affected from 0 to 5.1.19 (excl.)

Vendor	Ubiquiti Inc
Product	Cloud Gateways
Versions	Default: unaffected affected from 0 to 5.1.19 (excl.)

Vendor	Ubiquiti Inc
Product	Enterprise Firewall Core
Versions	Default: unaffected affected from 0 to 5.1.19 (excl.)

References

https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc

Problem Types

CWE-284 Improper Access Control - Generic CWE