CVE-2026-46376: CWE-798: Use of Hard-coded Credentials in FreePBX security-reporting
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.
AI Analysis
Technical Summary
CVE-2026-46376 is a critical vulnerability in FreePBX's security-reporting component affecting versions >= 15.0.42 and < 16.0.45, and >= 17.0.1 and < 17.0.7. It involves the use of hard-coded initial template credentials for the User Control Panel (UCP). After initial setup via authenticated Admin Control Panel (ACP) access, if the administrator does not change these default credentials, unauthenticated users can gain access to UCP. This vulnerability is classified under CWE-798 (Use of Hard-coded Credentials). The issue is resolved in FreePBX versions 16.0.45 and 17.0.7.
Potential Impact
Unauthenticated attackers may gain unauthorized access to the User Control Panel (UCP) of FreePBX installations running affected versions if default hard-coded credentials are not changed by the administrator. This could lead to unauthorized control or information disclosure via the UCP. The vulnerability has a critical CVSS score of 9.3, reflecting high impact and ease of exploitation without authentication.
Mitigation Recommendations
This vulnerability is fixed in FreePBX versions 16.0.45 and 17.0.7. Administrators should upgrade to these or later versions to remediate the issue. Until upgraded, administrators must ensure that the hard-coded initial template credentials for the User Control Panel are changed immediately after enabling UCP to prevent unauthorized access. Patch status is not explicitly stated beyond the fixed versions; therefore, verify the vendor advisory for the latest remediation guidance.
CVE-2026-46376: CWE-798: Use of Hard-coded Credentials in FreePBX security-reporting
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.
CVSS v4.0
Score 9.3critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-46376 is a critical vulnerability in FreePBX's security-reporting component affecting versions >= 15.0.42 and < 16.0.45, and >= 17.0.1 and < 17.0.7. It involves the use of hard-coded initial template credentials for the User Control Panel (UCP). After initial setup via authenticated Admin Control Panel (ACP) access, if the administrator does not change these default credentials, unauthenticated users can gain access to UCP. This vulnerability is classified under CWE-798 (Use of Hard-coded Credentials). The issue is resolved in FreePBX versions 16.0.45 and 17.0.7.
Potential Impact
Unauthenticated attackers may gain unauthorized access to the User Control Panel (UCP) of FreePBX installations running affected versions if default hard-coded credentials are not changed by the administrator. This could lead to unauthorized control or information disclosure via the UCP. The vulnerability has a critical CVSS score of 9.3, reflecting high impact and ease of exploitation without authentication.
Mitigation Recommendations
This vulnerability is fixed in FreePBX versions 16.0.45 and 17.0.7. Administrators should upgrade to these or later versions to remediate the issue. Until upgraded, administrators must ensure that the hard-coded initial template credentials for the User Control Panel are changed immediately after enabling UCP to prevent unauthorized access. Patch status is not explicitly stated beyond the fixed versions; therefore, verify the vendor advisory for the latest remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-13T19:53:47.921Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a199940e29bf47b50eaf82f
Added to database: 5/29/2026, 1:48:48 PM
Last enriched: 5/29/2026, 2:03:45 PM
Last updated: 5/29/2026, 6:17:05 PM
Views: 5
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