What is CVE-2026-54406?

CVE-2026-54406 is a high-severity vulnerability in Ubiquiti Inc Unifi Network Application, classified under Path Traversal. CVSS score: 8.7/10. Published 2026-07-02.

How severe is CVE-2026-54406?

High severity. CVSS v3 base score is 8.7 out of 10.

Path Traversal in Ubiquiti Inc Unifi Network Application

CVE-2026-54406

A malicious actor with access to the network and high privileges could exploit a Path Traversal vulnerability found in self-hosted instances of UniFi Network Application to escalate write permission on the host device.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.004 (30.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H.

Affected products

Ubiquiti Inc Unifi Network Application — versions 0
Ui Unifi_network_application

Weakness classification (CWE)

CWE-22 — Path Traversal

References

support@hackerone.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-54406?: CVE-2026-54406 is a high-severity vulnerability in Ubiquiti Inc Unifi Network Application, classified under Path Traversal. CVSS score: 8.7/10. Published 2026-07-02.
How severe is CVE-2026-54406?: High severity. CVSS v3 base score is 8.7 out of 10.