VULNERABILITY INTELLIGENCE

CVE-2026-34909

CVSS score10 CRITICAL

EPSS probability68.03%

CISA KEVKnown exploited vulnerability

Published2026-05-22

Last modified2026-07-23

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

Known Exploited Vulnerability

Ubiquiti UniFi OS Path Traversal Vulnerability

Vendor / product: Ubiquiti / UniFi OS

Description

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

Weakness classification

support@hackerone.com: CWE-22

Primary references

support@hackerone.com — Patch, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — US Government Resource
134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Third Party Advisory