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CVE-2026-54402

CRITICAL
9.9
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-54402
State
PUBLISHED
Assigner
hackerone
Reserved
2026-06-13 15:00 UTC
Published
2026-07-02 14:49 UTC
Last updated
2026-07-02 15:52 UTC
Primary CWE
CWE-20
CWE-20 Improper Input Validation
Vendor / Product
Ubiquiti Inc / UniFi OS Server
Sources
cve.org  ·  NVD

Severity & Metrics

9.9 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
total
Affected products (12)
VendorProductPlatformVersions
Ubiquiti Inc Cloud Gateways — 0 < 5.1.19
Ubiquiti Inc Cloud Keys — 0 < 5.1.19
Ubiquiti Inc Dream Machines — 0 < 5.1.19
Ubiquiti Inc Dream Routers — 0 < 5.1.19
Ubiquiti Inc Dream Wall — 0 < 5.1.19
Ubiquiti Inc Enterprise Firewall Core — 0 < 5.1.19
Ubiquiti Inc Enterprise Fortress Gateway — 0 < 5.1.19
Ubiquiti Inc Enterprise Video Recorders — 0 < 5.1.19
Ubiquiti Inc Express 7 — 0 < 5.1.19
Ubiquiti Inc Network Attached Storage — 0 < 5.1.19
Ubiquiti Inc Network Video Recorders — 0 < 5.1.19
Ubiquiti Inc UniFi OS Server — 0 < 5.1.19
Weakness (CWE)
CWESourceDescription
CWE-20 cna CWE-20 Improper Input Validation
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.9 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References (1)
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