CVE-2026-54402

CRITICAL

Ubiquiti INC UniFi OS Server - Improper Input Validation

Title source: rule

Description

A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in UniFi OS to execute a Command Injection on the host device.

References (1)

Core 1

Core References

https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc

Scores

CVSS v3 9.9

EPSS 0.0118

EPSS Percentile 64.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-20 CWE-77

Status published

Products (44)

Ubiquiti Inc/Cloud Gateways < 5.1.19

Ubiquiti Inc/Cloud Keys < 5.1.19

Ubiquiti Inc/Dream Machines < 5.1.19

Ubiquiti Inc/Dream Routers < 5.1.19

Ubiquiti Inc/Dream Wall < 5.1.19

Ubiquiti Inc/Enterprise Firewall Core < 5.1.19

Ubiquiti Inc/Enterprise Fortress Gateway < 5.1.19

Ubiquiti Inc/Enterprise Video Recorders < 5.1.19

Ubiquiti Inc/Express 7 < 5.1.19

Ubiquiti Inc/Network Attached Storage < 5.1.19

... and 34 more

Published Jul 02, 2026

Tracked Since Jul 02, 2026