CVE-2026-54403

HIGH

Ubiquiti INC UniFi OS Server - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Title source: rule

Description

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices running UniFi OS to bypass authentication of such UniFi OS devices or instances.

References (1)

Core 1

Core References

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

Scores

CVSS v3 8.6

EPSS 0.0056

EPSS Percentile 43.2%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-22

Status published

Products (44)

Ubiquiti Inc/Cloud Gateways < 5.1.19

Ubiquiti Inc/Cloud Keys < 5.1.19

Ubiquiti Inc/Dream Machines < 5.1.19

Ubiquiti Inc/Dream Routers < 5.1.19

Ubiquiti Inc/Dream Wall < 5.1.19

Ubiquiti Inc/Enterprise Firewall Core < 5.1.19

Ubiquiti Inc/Enterprise Fortress Gateway < 5.1.19

Ubiquiti Inc/Enterprise Video Recorders < 5.1.19

Ubiquiti Inc/Express 7 < 5.1.19

Ubiquiti Inc/Network Attached Storage < 5.1.19

... and 34 more

Published Jul 02, 2026

Tracked Since Jul 02, 2026