CVE-2026-110456 in UniFi Protect AI Key
Summary
by MITRE • 10/14/2026
A malicious actor with access to the network and under certain conditions could exploit an Improper Access Control vulnerability found in UniFi Protect AI Key to access internal resources through the device.
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Analysis
by VulDB Data Team • 10/14/2026
The identified security flaw represents a critical failure in identity verification and authorization mechanisms within the UniFi Protect AI Key hardware appliance. This improper access control vulnerability allows authenticated or potentially unauthenticated actors, depending on the specific network conditions and configuration state of the device, to bypass intended restrictions and interact with internal system resources that are not meant for public or unauthorized consumption. The root cause typically stems from insufficient validation of user privileges when handling API requests or administrative functions exposed by the management interface. In many such embedded systems, developers may inadvertently expose debug endpoints, legacy APIs, or misconfigured service ports that do not enforce strict role-based access controls (RBAC). This oversight creates a pathway where an attacker who has gained initial network foothold can escalate privileges or extract sensitive data without needing to crack strong passwords or exploit complex logic errors in the core application code.
From a technical perspective, this vulnerability aligns closely with CWE-269: Improper Privilege Control and CWE-732: Incorrect Permission Assignment for Critical Resource. The attacker leverages their position on the local network segment to send crafted requests to the AI Key management interface. Because the device fails to adequately verify that the requesting entity possesses the necessary administrative rights or valid session tokens, it processes these requests as if they originated from a trusted administrator. This can lead to unauthorized configuration changes, such as altering authentication settings, disabling security logs, or exposing connected cameras and recording storage paths to external entities. The operational impact is severe, potentially resulting in complete compromise of the physical security infrastructure managed by UniFi Protect. Attackers could disable alarms, view live feeds from private areas, or manipulate access control lists for doors and gates integrated with the system.
The exploitation scenario generally requires the attacker to be on the same Layer 2 network segment as the AI Key, although certain misconfigurations involving VLAN tagging or router ACLs might allow remote exploitation over wider networks if management ports are exposed to the internet without proper segmentation. This aligns with MITRE ATT&CK technique T1078: Valid Accounts and potentially T1546: Event Triggered Execution if the vulnerability allows for persistent backdoor installation via configuration manipulation. The lack of network-level isolation between administrative interfaces and user-facing services exacerbates the risk, allowing lateral movement from a compromised endpoint to critical security infrastructure components.
Mitigation strategies must focus on strict network segmentation and principle of least privilege. Administrators should ensure that management interfaces are not accessible from untrusted networks by implementing VLAN segregation or firewall rules that restrict access to trusted IP ranges only. Regularly updating the firmware is crucial as vendors often release patches addressing these specific authorization flaws in subsequent releases. Additionally, enabling multi-factor authentication for administrative accounts and disabling unused services or ports on the device can significantly reduce the attack surface. Security teams should also monitor network traffic for anomalous requests directed at management interfaces of IoT security devices to detect potential exploitation attempts early.