Improper Access Control in UniFi OS Devices by Ubiquiti
CVE-2026-77534

9.9CRITICAL

Key Information:

Vendor

Ubiquiti Inc

Status
Unifi Os Server
Cloud Keys
Network Video Recorders
Enterprise Network Video Recorders
Vendor
CVE Published:
26 August 2026

What is CVE-2026-77534?

A vulnerability allows a malicious actor with network access and minimal privileges to exploit improper access control measures in devices running UniFi OS. This exploitation can lead to privilege escalation, enabling unauthorized users to gain higher access privileges within those instances of UniFi OS.

Affected Version(s)

Cloud Gateways 0 < 5.1.31

Cloud Keys 0 < 5.1.31

Dream Machines 0 < 5.1.31

References

https://community.ui.com/releases/Security-Advisory-Bulle...

CVSS V3.1

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.