CVE-2026-54403

Authentication Bypass via Path Traversal on Ubiquiti UniFi OS Devices

Published Jul 2, 2026 CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Authentication Bypass via Path Traversal on Ubiquiti UniFi OS Devices
Type Values Removed Values Added
Title Path Traversal Vulnerability Allowing Authentication Bypass on UniFi OS Devices
Type Values Removed Values Added
Title Path Traversal Vulnerability Allowing Authentication Bypass on UniFi OS Devices
Type Values Removed Values Added
Title Path Traversal Authentication Bypass in Ubiquiti UniFi OS
Type Values Removed Values Added
Title Path Traversal Authentication Bypass in Ubiquiti UniFi OS
Type Values Removed Values Added
Title Unauthenticated Access via Path Traversal in UniFi OS
Type Values Removed Values Added
Title Unauthenticated Access via Path Traversal in UniFi OS
Type Values Removed Values Added
Title Authentication Bypass via Path Traversal in UniFi OS
Type Values Removed Values Added
Title Authentication Bypass via Path Traversal in UniFi OS
Type Values Removed Values Added
Title Path Traversal Vulnerability in UniFi OS Enables Authentication Bypass
Type Values Removed Values Added
Title Path Traversal Vulnerability in UniFi OS Enables Authentication Bypass
Type Values Removed Values Added
Title Path Traversal Vulnerability in Ubiquiti UniFi OS Enabling Authentication Bypass
Type Values Removed Values Added
Title Path Traversal Vulnerability in Ubiquiti UniFi OS Enabling Authentication Bypass
Type Values Removed Values Added
Title Path Traversal for Authentication Bypass in Ubiquiti UniFi OS
Type Values Removed Values Added
Title Path Traversal for Authentication Bypass in Ubiquiti UniFi OS
Type Values Removed Values Added
Title Path Traversal Enables Authentication Bypass on Ubiquiti Unifi OS Devices
Type Values Removed Values Added
Title Path Traversal Enables Authentication Bypass on Ubiquiti Unifi OS Devices
Type Values Removed Values Added
Title UniFi OS Path Traversal Authentication Bypass Vulnerability
Type Values Removed Values Added
Title UniFi OS Path Traversal Authentication Bypass Vulnerability
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'}

Subscriptions

Ui Enterprise Firewall Core Enterprise Firewall Core Firmware Enterprise Fortress Gateway Enterprise Fortress Gateway Firmware Enterprise Network Video Recorder Enterprise Network Video Recorder Core Enterprise Network Video Recorder Core Firmware Enterprise Network Video Recorder Firmware Unas 2 Unas 2 Firmware Unas 4 Unas 4 Firmware Unas Pro Unas Pro 4 Unas Pro 4 Firmware Unas Pro 8 Unas Pro 8 Firmware Unas Pro Firmware Unifi Cloud Gateway Fiber Unifi Cloud Gateway Fiber Firmware Unifi Cloud Gateway Industrial Unifi Cloud Gateway Industrial Firmware Unifi Cloud Gateway Max Unifi Cloud Gateway Max Firmware Unifi Cloud Gateway Ultra Unifi Cloud Gateway Ultra Firmware Unifi Cloud Key Plus Unifi Cloud Key Plus Firmware Unifi Cloudkey Unifi Cloudkey Enterprise Unifi Cloudkey Enterprise Firmware Unifi Cloudkey Firmware Unifi Dream Machine Unifi Dream Machine Beast Unifi Dream Machine Beast Firmware Unifi Dream Machine Firmware Unifi Dream Machine Pro Unifi Dream Machine Pro Firmware Unifi Dream Machine Pro Max Unifi Dream Machine Pro Max Firmware Unifi Dream Machine Special Edition Unifi Dream Machine Special Edition Firmware Unifi Dream Router Unifi Dream Router 5g Max Unifi Dream Router 5g Max Firmware Unifi Dream Router 7 Unifi Dream Router 7 Firmware Unifi Dream Router Firmware Unifi Dream Wall Unifi Dream Wall Firmware Unifi Express 7 Unifi Express 7 Firmware Unifi Network Video Recorder Unifi Network Video Recorder Firmware Unifi Network Video Recorder G2 Unifi Network Video Recorder G2 Firmware Unifi Network Video Recorder G2 Pro Unifi Network Video Recorder G2 Pro Firmware Unifi Network Video Recorder Instant Unifi Network Video Recorder Instant Firmware Unifi Network Video Recorder Pro Unifi Network Video Recorder Pro Firmware Unifi Os Server
Weaknesses

Sources

Status
PUBLISHED
Assigner
hackerone
Published
Updated
Jul 2, 2026, 4:09 PM
Reserved
Jun 13, 2026, 3:00 PM
Status
Analyzed
Published
Jul 2, 2026, 3:17 PM
Modified
Jul 10, 2026, 2:46 AM