CVE-2026-54402

high

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

References
More

https://www.bleepingcomputer.com/news/security/ubiquiti-warns-of-new-max-severity-unifi-os-vulnerability/

https://thehackernews.com/2026/07/ubiquiti-patches-critical-unifi-flaws.html

https://securityaffairs.com/194978/security/ubiquiti-patches-critical-unifi-os-flaws-allowing-command-injection-and-privilege-escalation.html

https://arcticwolf.com/resources/blog/ubiquiti-unifi-os-critical-remote-code-execution-and-privilege-escalation-vulnerabilities/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-41391

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

Details

Source: Mitre, NVD

Published: 2026-07-02

Updated: 2026-07-10

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

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