CVE-2026-77550
CVSS Score
10.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-93 |
| Vendor | ubiquiti inc |
| Product | unifi os server |
| Published | Aug 26, 2026 |
| Last Updated | Aug 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Ubiquiti Inc / UniFi OS Server
0 < 5.1.37
Ubiquiti Inc / Cloud Keys
0 < 5.1.31
Ubiquiti Inc / Network Video Recorders
0 < 5.1.31
Ubiquiti Inc / Enterprise Network Video Recorders
0 < 5.1.31
Ubiquiti Inc / Enterprise Network Attached Storage
0 < 5.1.31
Ubiquiti Inc / Dream Machines
0 < 5.1.31
Ubiquiti Inc / Enterprise Firewall Core
0 < 5.1.31
Ubiquiti Inc / Dream Routers
0 < 5.1.31
Ubiquiti Inc / Enterprise Fortress Gateway
0 < 5.1.31
Ubiquiti Inc / Cloud Gateways
0 < 5.1.31
Ubiquiti Inc / Dream Wall
0 < 5.1.31
Ubiquiti Inc / Express 7
0 < 5.1.31
Ubiquiti Inc / Network Attached Storage
0 < 5.1.32
Ubiquiti Inc / Express
0 < 4.0.17