Path Traversal Vulnerability in UniFi OS Devices by Ubiquiti
CVE-2026-54403

8.6HIGH

What is CVE-2026-54403?

A vulnerability has been identified in UniFi OS devices that allows a malicious actor with network access to exploit a Path Traversal issue. This could enable the attacker to bypass authentication mechanisms, granting unauthorized access to devices or instances running the affected OS. Proper remediation and patching are crucial to secure these systems.

Affected Version(s)

Cloud Gateways 0 < 5.1.19

Cloud Keys 0 < 5.1.19

Dream Machines 0 < 5.1.19

References

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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