PT-2026-42657 · Ubiquiti · Unifi Os

Published

2026-05-22

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Updated

2026-06-09

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CVE-2026-34908

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 An improper access control issue in UniFi OS devices allows a malicious actor with network access to make unauthorized changes to the system. This flaw can be chained with other vulnerabilities to achieve unauthenticated remote code execution as root, and it is currently being exploited in the wild to deploy commodity malware.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Improper Access Control

Weakness Enumeration

Related Identifiers

CVE-2026-34908

Affected Products

Unifi Os