---
id: CVE-2026-54675
title: FreePBX is an open source IP PBX
summary: >-
  FreePBX is an open source IP PBX. Prior to versions 16.0.10 and 17.0.5, a
  critical vulnerability exists in the sound language upload and conversion
  functionality that allows an authenticated attacker to perform arbitrary file
  writes, lea…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-22
  - CWE-73
  - CWE-434
vendor: sangoma
product: freepbx
affected:
  - 'freepbx >= 16.0, < 16.0.10'
  - 'freepbx >= 17.0, < 17.0.5'
patched:
  - freepbx 17.0.5
published: '2026-09-28'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T18:21:22.487'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54675'
references:
  - url: >-
      https://github.com/FreePBX/security-reporting/security/advisories/GHSA-95gm-cmxf-cv8v
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
epss: 0.00657
epssPercentile: 0.51246
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-28T18:13:53.803767Z'
scores:
  nvd: 8.8
  cna: 8.7
ingestedAt: '2026-09-28T18:17:54.311Z'
---

## Overview

FreePBX is an open source IP PBX. Prior to versions 16.0.10 and 17.0.5, a critical vulnerability exists in the sound language upload and conversion functionality that allows an authenticated attacker to perform arbitrary file writes, leading directly to remote code execution (RCE). Authentication with a known username is required. The vulnerability stems from insufficient path sanitization in the file conversion process, enabling path traversal attacks that place malicious PHP files in the web server's root directory. This issue has been patched in versions 16.0.10 and 17.0.5.

## Affected

- `freepbx >= 16.0, < 16.0.10`
- `freepbx >= 17.0, < 17.0.5`

## Remediation

Upgrade past the affected range:

- `freepbx 17.0.5`