CVE-2026-55119: Ubiquiti UniFi Talk privilege escalation via improper access control

CVE-2026-55119 · Severity: high · CVSS 8.1 · Published 2026-07-02

Ubiquiti UniFi Talk is a business communication application used for managing VoIP phone systems. A security vulnerability has been identified where an authorized user with low-level access can bypass security controls to gain higher-level administrative privileges. This could allow an internal user to access sensitive communication data or modify system settings without authorization.

Technologies: Ubiquiti UniFi Talk Application. Vendors: Ubiquiti.

Quick answers

Is CVE-2026-55119 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-55119 being exploited in the wild.
How severe is CVE-2026-55119?
High severity, with a CVSS score of 8.1, published 2 July 2026.
Which products and versions are affected?
Ubiquiti UniFi Talk Application < 5.2.2.
Is there a fix for CVE-2026-55119?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-55119 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-55119?
Check whether you run Ubiquiti UniFi Talk Application at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An improper access control vulnerability (CWE-284) exists in the Ubiquiti UniFi Talk Application prior to version 5.2.2. A malicious actor with network access and existing low-level credentials can exploit this flaw to escalate their privileges to a higher level within the application. The attack vector is network-based and requires low privileges but no user interaction. The vulnerability has been addressed in UniFi Talk Application version 5.2.2.

Affected products

  • Ubiquiti Inc UniFi Talk Application < 5.2.2

Timeline

  • 2026-07-02: advisory
  • 2026-07-02: disclosed

References

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