Vulnerability Intelligence Report
FreePBX: Unauthenticated Use of Hard-Coded Credentials Vulnerability in FreePBX UCP Interface
CVE-2026-46376
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.
No Active Exploit Signals
CVSS Base Score
9.3
CRITICAL
EPSS Probability:0.43%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-798 ↗CWE-798: Use of Hard-coded Credentials
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| FreePBX | security-reporting | >= 15.0.42, < 16.0.45 (affected), >= 17.0.1, < 17.0.7 (affected) |
Threat Intelligence Signals
EPSS Score
0.425%
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2026-05-13T19:53:47 |
| Published | 2026-05-29T12:39:57 |
| Last Updated | 2026-05-29T14:00:06 |
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