CVE-2026-54402 CRITICAL

CVE-2026-54402

Vendor Ubiquiti Inc
Product UniFi OS Server
Weakness CWE-20 · Input validation
Published July 2, 2026
Last update July 2, 2026
View on NVD All CVEs

CVSS base score

9.9/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 2, 2026 CVE published
July 2, 2026 Record updated