CVE-2025-55209 - CVE House

Back to Database

Status published Medium CVE-2025-55209

FreePBX UCP is Vulnerable to Stored XSS Through its User Control Panel

5.1 CVSS

Vulnerability Description

contactmanager is a module for FreePBX@, which is an open source GUI that controls and manages Asterisk© (PBX). In versions 15.0.14 and below, 16.0.0 through 16.0.26.4 and 17.0.0 through 17.0.5, a stored cross-site scripting (XSS) vulnerability in FreePBX allows a low-privileged User Control Panel (UCP) user to inject malicious JavaScript into the system. The malicious code executes in the context of an administrator when they interact with the affected component, leading to session hijacking and potential privilege escalation. This issue is fixed in versions 15.0.14, 16.0.27 and 17.0.6.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-55209

Check My Exposure

Credits & Attribution

No credits recorded in the NVD database.

References

More from FreePBX

View All →

Authenticated SQL Injection in FreePBX tts (Text To Speech) module

Authenticated amportal search for ‘freepbx_engine’ in non root writeable directories leads to potential privilege escalation

FreePBX Endpoint Manager's Weak Default Password Allows Unauthenticated Access in Endpoint Module REST API

FreePBX Endpoint Manager Allows Unauthenticated Logins to Administrator Control Panel via Forged Basic Auth Header

FreePBX Administration GUI is Vulnerable to Authenticated Command Injection

Affected Vendor

FreePBX

View all reports →

Affected Software

contactmanager

Vulnerable Versions:

< 15.0.14, >= 16.0.0, < 16.0.27, >= 17.0.0, < 17.0.6

Timeline

Official Publish: September 4th, 2025

Last Modified: February 13th, 2026

Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1189 Drive-by Compromise

T1059.007 JavaScript

T1539 Steal Web Session Cookie

T1213 Data from Information Repositories

T1567 Exfiltration Over Web Service

T1491.001 Defacement