CVE-2026-34911

HIGH

Ubiquiti INC UniFi OS Server - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Title source: rule

Description

A malicious actor with access to the network and low privileges could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to obtain sensitive information.

References (1)

Core 1

Core References

https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b

Scores

CVSS v3 7.7

EPSS 0.0066

EPSS Percentile 46.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-22

Status published

Products (31)

Ubiquiti Inc/EFG < 5.1.12

Ubiquiti Inc/ENVR < 5.1.12

Ubiquiti Inc/ENVR-Core < 5.1.12

Ubiquiti Inc/Express 7 < 5.1.12

Ubiquiti Inc/UCG-Fiber < 5.1.12

Ubiquiti Inc/UCG-Industrial < 5.1.12

Ubiquiti Inc/UCG-Max < 5.1.12

Ubiquiti Inc/UCG-Ultra < 5.1.12

Ubiquiti Inc/UCK < 5.1.12

Ubiquiti Inc/UCK-Enterprise < 5.1.12

... and 21 more

Published May 22, 2026

Tracked Since May 22, 2026