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UniFi OS CVE-2026-34909

| EUVD-2026-31384 CRITICAL
Path Traversal (CWE-22)
2026-05-22 hackerone GHSA-95fp-244g-g3vr
10.0
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Patch available
May 22, 2026 - 02:01 EUVD
Analysis Generated
May 22, 2026 - 01:43 vuln.today

DescriptionNVD

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.

AnalysisAI

Path traversal in Ubiquiti UniFi OS devices allows network-adjacent attackers to read sensitive files from the underlying system, which can then be leveraged to take over an underlying account. The flaw carries a maximum CVSS 10.0 score reflecting unauthenticated network exploitation with scope change and full confidentiality, integrity, and availability impact across a broad fleet of UniFi gateways, cameras, NVRs, and NAS appliances. …

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RemediationAI

24 hours: Audit and inventory all UniFi devices; restrict management interface access to trusted administrative networks only. 7 days: Disable WAN management features across all UniFi OS devices; implement network segmentation isolating UniFi controllers and edge devices from general network traffic. …

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CVE-2026-34909 vulnerability details – vuln.today

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