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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00556.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Ubiquiti Inc UniFi OS Server unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Dream Machines unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Enterprise Fortress Gateway unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Dream Wall unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Dream Routers unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Express 7 unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Cloud Keys unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Network Video Recorders unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Enterprise Video Recorders unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Cloud Gateways unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Network Attached Storage unaffected
Version Status Constraints
0 affected < 5.1.19
Ubiquiti Inc Enterprise Firewall Core unaffected
Version Status Constraints
0 affected < 5.1.19

No data.

No data.

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No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc cve-icon
History

Fri, 24 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Title Path Traversal Vulnerability Allowing Authentication Bypass on UniFi OS Devices

Wed, 22 Jul 2026 14:00:00 +0000

Type Values Removed Values Added
Title Path Traversal Authentication Bypass in Ubiquiti UniFi OS

Fri, 17 Jul 2026 11:00:00 +0000

Type Values Removed Values Added
Title Path Traversal Authentication Bypass in Ubiquiti UniFi OS

Wed, 15 Jul 2026 10:00:00 +0000

Type Values Removed Values Added
Title Unauthenticated Access via Path Traversal in UniFi OS

Mon, 13 Jul 2026 14:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated Access via Path Traversal in UniFi OS

Thu, 09 Jul 2026 05:45:00 +0000

Type Values Removed Values Added
Title Authentication Bypass via Path Traversal in UniFi OS

Wed, 08 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Title Authentication Bypass via Path Traversal in UniFi OS

Tue, 07 Jul 2026 13:15:00 +0000

Type Values Removed Values Added
Title Path Traversal Vulnerability in UniFi OS Enables Authentication Bypass

Tue, 07 Jul 2026 00:00:00 +0000

Type Values Removed Values Added
Title Path Traversal Vulnerability in UniFi OS Enables Authentication Bypass

Mon, 06 Jul 2026 11:15:00 +0000

Type Values Removed Values Added
Title Path Traversal Vulnerability in Ubiquiti UniFi OS Enabling Authentication Bypass

Sun, 05 Jul 2026 18:00:00 +0000

Type Values Removed Values Added
Title Path Traversal Vulnerability in Ubiquiti UniFi OS Enabling Authentication Bypass

Sun, 05 Jul 2026 10:00:00 +0000

Type Values Removed Values Added
Title Path Traversal for Authentication Bypass in Ubiquiti UniFi OS

Sun, 05 Jul 2026 02:00:00 +0000

Type Values Removed Values Added
Title Path Traversal for Authentication Bypass in Ubiquiti UniFi OS

Sat, 04 Jul 2026 13:00:00 +0000

Type Values Removed Values Added
Title Path Traversal Enables Authentication Bypass on Ubiquiti Unifi OS Devices

Fri, 03 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Title Path Traversal Enables Authentication Bypass on Ubiquiti Unifi OS Devices

Fri, 03 Jul 2026 13:30:00 +0000

Type Values Removed Values Added
Title UniFi OS Path Traversal Authentication Bypass Vulnerability

Fri, 03 Jul 2026 06:30:00 +0000

Type Values Removed Values Added
Title UniFi OS Path Traversal Authentication Bypass Vulnerability

Thu, 02 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Thu, 02 Jul 2026 15:15:00 +0000

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-07-02T16:09:42.714Z

Reserved: 2026-06-13T15:00:00.604Z

Link: CVE-2026-54403

cve-icon Vulnrichment

Updated: 2026-07-02T16:09:39.664Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-24T11:45:03Z

Weaknesses