CVE-2026-54400 PUBLISHED

Assigner: hackerone
Reserved: 13.06.2026 Published: 02.07.2026 Updated: 02.07.2026

A malicious actor with access to the network and high privileges could exploit an Improper Access Control vulnerability found in UniFi Access Application to escalate privileges on the host device.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS Score: 9.1

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

CVSS 3.1

Product Status

Vendor	Ubiquiti Inc
Product	UniFi Access Application
Versions	Default: unaffected affected from 0 to 4.2.29 (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