PT-2026-42658 · Ubiquiti · Unifi Os

CVE-2026-34909

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Published

2026-05-21

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Updated

2026-08-25

CVSS v3.1

10

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions UniFi OS (affected versions not specified)
Description A Path Traversal issue exists in UniFi OS devices due to improper restriction of directory path names. A remote actor with network access can exploit this to access files on the underlying system, which may be further manipulated to gain unauthorized access to a system account.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Path traversal

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Weakness Enumeration

Related Identifiers

BDU:2026-07799
CVE-2026-34909

Affected Products

Unifi Os