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CVE-2026-54708— Authenticated Remote Code Execution via Path Traversal in FreePBX Backup Module

Quick assessment

Affected
FreePBX security-reporting
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreePBX 是一款开源的 IP PBX（互联网协议电话交换机）系统。在版本 16.0.72 和 17.0.7 之前，FreePBX 的备份模块中存在一个关键漏洞，允许经过身份验证的攻击者在服务器上执行任意代码。该漏洞利用的前提是攻击者拥有已知的、具备足够访问权限（或对备份文件具有写入权限）的用户名凭据。此漏洞的根本原因是在备份恢复功能中存在不恰当的路径净化（path sanitization）处理，导致攻击者能够将恶意的 PHP 文件上传至网站的根目录。该问题已在版本 16.0.72 和 17.0.7 中修复。

CVSS 8.6 · High

Affected Version Matrix 2

VendorProduct Version RangeStatus
FreePBX security-reporting < 16.0.72 affected
< 17.0.7 affected
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I. Basic Information for CVE-2026-54708

Vulnerability Information
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Vulnerability Title
Authenticated Remote Code Execution via Path Traversal in FreePBX Backup Module
Source: CVE Program / CVE List V5
Vulnerability Description
FreePBX is an open source IP PBX. Prior to versions 16.0.72 and 17.0.7, a critical vulnerability exists in the FreePBX backup Module that allows authenticated attackers to execute arbitrary code on the server. Authentication with a known username that has sufficient access permissions and/or write access to backup files is required. This vulnerability is caused by improper path sanitization in the backup restore functionality, enabling attackers to upload malicious PHP files to the web root directory. This issue has been patched in versions 16.0.72 and 17.0.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreePBX security-reporting < 16.0.72 -

II. Public POCs for CVE-2026-54708

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III. Intelligence Information for CVE-2026-54708

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Other References for CVE-2026-54708 (1)

Same Patch Batch · FreePBX · 2026-09-28 · 6 CVEs total

CVE-2026-54675 8.7 HIGH FreePBX: Authenticated Remote Code Execution via File Upload and Convert in Soundlang Modu
CVE-2026-75600 8.6 HIGH FreePBX: Authenticated API generatedocs Host Command Injection
CVE-2026-54710 8.6 HIGH FreePBX: Authenticated Superfecta Arbitrary PHP Code Execution (RCE via Unsafe File Inclus
CVE-2026-54674 8.6 HIGH Authenticated Command Injection in FreePBX UCP Interface
CVE-2026-45562 7.7 HIGH FreePBX: Authenticated Remote Code Execution in FreePBX Music on Hold (MoH) Module

IV. Related Vulnerabilities

Same product: security-reporting
Same vendor: FreePBX
Same weakness: CWE-22

V. Comments for CVE-2026-54708

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