Vulnerability Intelligence Report
FreePBX Endpoint Manager Allows Unauthenticated Logins to Administrator Control Panel via Forged Basic Auth Header
CVE-2025-66039
FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. Versions are vulnerable to authentication bypass when the authentication type is set to "webserver." When providing an Authorization header with an arbitrary value, a session is associated with the target user regardless of valid credentials. This issue is fixed in versions 16.0.44 and 17.0.23.
No Active Exploit Signals
CVSS Base Score
9.3
CRITICAL
EPSS Probability:2.98%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-287 ↗CWE-287: Improper Authentication
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| FreePBX | framework | < 16.0.44 (affected), >= 17.0.1, < 17.0.23 (affected) |
Threat Intelligence Signals
EPSS Score
2.976%
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2025-11-21T01:08:02 |
| Published | 2025-12-09T21:32:03 |
| Last Updated | 2026-02-26T16:21:07 |
Community Chatter & Buzz