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CVE-2026-46376— FreePBX: Unauthenticated Use of Hard-Coded Credentials Vulnerability in FreePBX UCP Interface

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FreePBX项目的一套通过GUI（基于网页的图形化接口）配置Asterisk（IP电话系统）的工具。 FreePBX 15.0.42至16.0.45之前版本和17.0.7之前版本存在信任管理问题漏洞，该漏洞源于未经验证的用户可能使用硬编码的初始模板凭据访问用户控制面板。

AI Predicted 7.5 Difficulty: Easy EPSS 0.43% · P36

Affected Version Matrix 2

VendorProduct Version RangeStatus
FreePBX security-reporting >= 15.0.42, < 16.0.45 affected
>= 17.0.1, < 17.0.7 affected
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I. Basic Information for CVE-2026-46376

Vulnerability Information
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Vulnerability Title
FreePBX: Unauthenticated Use of Hard-Coded Credentials Vulnerability in FreePBX UCP Interface
Source: CVE Program / CVE List V5
Vulnerability Description
FreePBX is an open source IP PBX. From 15.0.42 to before 16.0.45 and 17.0.7, unauthenticated users may be able to access the User Control Panel (UCP) using hard-coded initial template credentials if these were not immediately changed by the Administrator who enabled UCP. Authenticated access to ACP is required for the initial setup of UCP generic templates, but after that, without further steps by the admin, unauthenticated users may be able to gain access. This vulnerability is fixed in 16.0.45 and 17.0.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的凭证
Source: CVE Program / CVE List V5
Vulnerability Title
FreePBX 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreePBX是FreePBX项目的一套通过GUI（基于网页的图形化接口）配置Asterisk（IP电话系统）的工具。 FreePBX 15.0.42至16.0.45之前版本和17.0.7之前版本存在信任管理问题漏洞，该漏洞源于未经验证的用户可能使用硬编码的初始模板凭据访问用户控制面板。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreePBX security-reporting >= 15.0.42, < 16.0.45 -

II. Public POCs for CVE-2026-46376

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III. Intelligence Information for CVE-2026-46376

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Vendor Advisories for CVE-2026-46376 (1)

Same Patch Batch · FreePBX · 2026-05-29 · 4 CVEs total

CVE-2026-44239 FreePBX: Authenticated Local File Inclusion in Dashboard Module
CVE-2026-44238 FreePBX: Authenticated SQL Injection via ORDER BY in CDR Reports
CVE-2026-44237 FreePBX: Authenticated Access can lead to Subsequent OAuth2 Authentication Bypass in API M

IV. Related Vulnerabilities

Same product: security-reporting
Same vendor: FreePBX
Same weakness: CWE-798

V. Comments for CVE-2026-46376

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