CVE-2026-55119

Ubiquiti · UniFi Talk Application

An improper access control vulnerability in the Ubiquiti UniFi Talk Application allows authenticated users with low privileges to perform unauthorized actions through privilege escalation.

Executive summary

An improper access control flaw in the Ubiquiti UniFi Talk Application enables low-privileged users to escalate their permissions, creating a significant risk of unauthorized administrative activity.

Vulnerability

The vulnerability stems from improper access control mechanisms that fail to adequately validate user permissions. An authenticated user with low privileges can exploit this flaw to escalate their access, effectively bypassing existing security restrictions within the application.

Business impact

Exploitation of this vulnerability allows an attacker to perform administrative functions within the UniFi Talk environment, which could lead to unauthorized access to communication logs or system settings. The CVSS score of 8.1 reflects the high severity of enabling unauthorized privilege escalation in a production environment.

Remediation

Immediate Action: Apply the vendor-provided patch immediately upon release to remediate the access control flaw.

Proactive Monitoring: Review application access logs for anomalous behavior or unauthorized attempts to access restricted administrative functions by standard users.

Compensating Controls: Implement additional authentication layers where possible and restrict access to the application’s administrative interface to authorized personnel only.

Exploitation status

Public Exploit Available: false

Analyst recommendation

Addressing privilege escalation vulnerabilities is critical to maintaining the security of enterprise applications. Organizations should ensure that the UniFi Talk Application is updated promptly and that user roles are regularly audited to minimize the impact of any potential authorization bypass.