Path Traversal in Ubiquiti Inc Unifi Network Application

CVE-2026-22557

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in the UniFi Network Application to access files on the underlying system that could be manipulated to access an underlying account.

Vulnerability class: Path Traversal (Directory Traversal)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.281 (98.1th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-22557: held from 0.281 to 0.281.

EPSS over last 30 days · oldest: 0.281 · newest: 0.281 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-22557?
CVE-2026-22557 is a critical-severity vulnerability in Ubiquiti Inc Unifi Network Application, classified under Path Traversal. CVSS score: 10.0/10. Published 2026-03-19.
How severe is CVE-2026-22557?
Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2026-22557 known to be exploited?
5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.