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Critical · 9.1 CVE-2026-77540 EUVD-2026-66367GHSA-w5vh-8c24-45f5

A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS…

Published Aug 26, 2026 · Updated Aug 27, 2026 · Assigned by Ubiquiti

Description

A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS Server to execute a Command Injection on the host device.

Affected products

VendorProductAffectedFixed
Ubiquiti UniFi OS Server < 5.1.37 5.1.37

Advisories 2

References