Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Reachable over the network with a low-privileged account (AV:N/PR:L); the vendor's 'certain conditions' caveat justifies AC:H, and host takeover gives total C:H/I:H/A:H.
Primary rating from Vendor (hackerone).
CVSS VectorNVD
Lifecycle Timeline
6DescriptionNVD
A malicious actor with access to the network and low privileges and under certain conditions could exploit an Improper Access Control vulnerability found in UniFi OS with UniFi Protect Application to escalate privileges on the host device.
AnalysisAI
Privilege escalation in UniFi OS running the UniFi Protect Application (versions below 5.1.19) allows a network-adjacent, low-privileged attacker to gain control of the underlying host device via improper access control. Affected hardware spans Ubiquiti's Dream Machines, Dream Wall, Dream Routers, Cloud Keys, Cloud Gateways, and Network/Enterprise Video Recorders. No public exploit identified at time of analysis; EPSS is low (0.19%) and CISA SSVC records no known exploitation, but the total technical impact and 8.8 CVSS make it a meaningful patch priority.
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-41396
GHSA-8jvx-73vq-fvch