CVE-2025-66039 json
FreePBX Endpoint Manager Allows Unauthenticated Logins to Administrator Control Panel via Forged Basic Auth Header
published 2025-12-09 10 mo ago modified 2026-09-25 44 d ago also EUVD-2025-202329
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.4%
- EPSS 3.4% chance of exploitation in 30 days, percentile 88%
- public exploits
- 3
- Metasploit
Summary
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.
Patch / fix
- freepbx-contributedmodules endpointman 16.0.44, 17.0.23
- freepbx endpointman 16.0.44, 17.0.23
Timeline
- Published
- First public exploit (Metasploit auxiliary/gather/freepbx_custom_extension_injection)
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 10 mo ago
Exploit prediction
3.39% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit auxiliary/gather/freepbx_custom_extension_injection FreePBX Custom Extension SQL Injection metasploit auxiliary, normal rank, 2025-12-11
- Metasploit exploit/unix/http/freepbx_custom_extension_rce FreePBX endpoint SQLi to RCE metasploit exploit, excellent rank, 2025-12-11
- Metasploit exploit/unix/http/freepbx_firmware_file_upload FreePBX firmware file upload metasploit exploit, excellent rank, 2025-12-11
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- FreePBX framework
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/FreePBX/framework/commit/04224253156543cd9932b90458660b2f19fc0e35#diff-72f14a52840a61504a8e03cd195035b44e488a
product
-
github.com
/FreePBX/security-reporting/security/advisories/GHSA-9jvh-mv6x-w698
mitigation, vendor-advisory
-
freepbx.org
/watch-what-we-do-with-security-fixes-%f0%9f%91%80
not-applicable, vendor-advisory
Sources
- CVE List CVE-2025-66039
- NVD CVE-2025-66039
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.