Active Debug Code Vulnerability in UniFi OS by Ubiquiti
CVE-2026-77545

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-2026-77545?

A security flaw in UniFi OS allows a malicious actor with low-level access to exploit the Active Debug Code vulnerability. Under specific conditions, this could enable unauthorized privilege escalation, compromising the integrity and security of devices operating on this platform. Device administrators should monitor for signs of exploitation and follow best practices for device hardening.

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
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.