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CRITICALCVE-2026-34909Published Modified CNA hackerone

CVE-2026-34909: 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

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.

Metrics

CVSS v3.1
10.0
Severity
CRITICAL
Fixed in
4.0.14
Affected Products
32

Fix available

4.0.145.0.85.1.105.1.115.1.12
Affected packages
  • Ubiquiti Inc / UniFi OS Server
    < 5.0.8 (from 0)
  • Ubiquiti Inc / Express
    < 4.0.14 (from 0)
  • Ubiquiti Inc / UDM
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UDM-Pro
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UDM-SE
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UDM-Pro-Max
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UDM-Beast
    < 5.1.11 (from 0)
  • Ubiquiti Inc / EFG
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UDW
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UDR
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UDR7
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UDR-5G
    < 5.1.12 (from 0)
  • Ubiquiti Inc / Express 7
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UNVR
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UNVR-Pro
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UNVR-Instant
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UNVR-G2
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UNVR-G2-Pro
    < 5.1.12 (from 0)
  • Ubiquiti Inc / ENVR
    < 5.1.12 (from 0)
  • Ubiquiti Inc / ENVR-Core
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UNAS-2
    < 5.1.10 (from 0)
  • Ubiquiti Inc / UNAS-4
    < 5.1.10 (from 0)
  • Ubiquiti Inc / UNAS-Pro
    < 5.1.10 (from 0)
  • Ubiquiti Inc / UNAS-Pro-4
    < 5.1.10 (from 0)
  • Ubiquiti Inc / UNAS-Pro-8
    < 5.1.10 (from 0)
  • Ubiquiti Inc / UCKP
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UCK
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UCK-Enterprise
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UCG-Ultra
    < 5.1.12 (from 0)
  • Ubiquiti Inc / UCG-Max
    < 5.1.12 (from 0)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H