A malicious actor with access to the network could exploit an Improper Neutralization of CRLF Sequences vulnerability found in certain devices running UniFi OS to bypass authentication to 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 High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact total

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 < 5.1.37
Ubiquiti Inc Cloud Keys unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Network Video Recorders unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Enterprise Network Video Recorders unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Enterprise Network Attached Storage unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Dream Machines unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Enterprise Firewall Core unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Dream Routers unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Enterprise Fortress Gateway unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Cloud Gateways unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Dream Wall unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Express 7 unaffected
Version Status Constraints
0 affected < 5.1.31
Ubiquiti Inc Network Attached Storage unaffected
Version Status Constraints
0 affected < 5.1.32
Ubiquiti Inc Express unaffected
Version Status Constraints
0 affected < 4.0.17

No data.

No data.

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No data.

Project Subscriptions

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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-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9 cve-icon
History

Wed, 26 Aug 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Wed, 26 Aug 2026 12:45:00 +0000

Type Values Removed Values Added
Title UniFi OS Authentication Bypass via CRLF Injection

Wed, 26 Aug 2026 11:00:00 +0000

Type Values Removed Values Added
Description A malicious actor with access to the network could exploit an Improper Neutralization of CRLF Sequences vulnerability found in certain devices running UniFi OS to bypass authentication to such UniFi OS devices or instances.
Weaknesses CWE-93
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Ubiquiti

Published:

Updated: 2026-08-26T12:50:51.261Z

Reserved: 2026-08-20T20:32:37.794Z

Link: CVE-2026-77550

cve-icon Vulnrichment

Updated: 2026-08-26T12:50:46.954Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-26T12:30:05Z

Weaknesses