๐Ÿ” CVE Alert

CVE-2026-55110

HIGH 7.5
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th

A malicious actor who lures an authenticated user to a malicious page could exploit a Cross-Origin Resource Sharing (CORS) misconfiguration found in UniFi OS to trigger actions in UniFi OS using that user's session.

CWE CWE-942
Vendor ubiquiti inc
Product unifi os server
Published Jul 2, 2026
Last Updated Jul 2, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

Ubiquiti Inc / UniFi OS Server
0 < 5.1.19
Ubiquiti Inc / Dream Machines
0 < 5.1.19
Ubiquiti Inc / Enterprise Fortress Gateway
0 < 5.1.19
Ubiquiti Inc / Dream Wall
0 < 5.1.19
Ubiquiti Inc / Dream Routers
0 < 5.1.19
Ubiquiti Inc / Express 7
0 < 5.1.19
Ubiquiti Inc / Cloud Keys
0 < 5.1.19
Ubiquiti Inc / Network Video Recorders
0 < 5.1.19
Ubiquiti Inc / Enterprise Video Recorders
0 < 5.1.19
Ubiquiti Inc / Cloud Gateways
0 < 5.1.19
Ubiquiti Inc / Network Attached Storage
0 < 5.1.19
Ubiquiti Inc / Enterprise Firewall Core
0 < 5.1.19

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
community.ui.com: https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc