NVD / CVE Program· CNA GitHub_M

CVE-2025-66039: FreePBX Endpoint Manager Allows Unauthenticated Logins to Administrator Control Panel via Forged Basic Auth Header

Noroxi assessment

Priority: This week (action score 60/100)

A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
A ready-made attack tool exists and the flaw can be exploited over the network without an account, so priority is at least “This week”.
Probability of exploitation in the next 30 days: 3.3% (FIRST EPSS); higher than 88.7% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
No fixed version is recorded, but the references include a patch (commit or PR) link.

Don’t wait for the next maintenance window. See the fix and affected versions sections below.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

CriticalCVSS 9.3 · v4.0—Weaponized No fix recorded

BDU:2025-15989

Published: Dec 9, 2025
Updated: Sep 25, 2026
EPSS: 3.3% · 88th percentile
CWE: CWE-287

Report tools

JSON

Action score

This week

Don’t wait for the next maintenance window.

CVSS: 37 / 40 · 9.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 3.3%
Ready-made attack tool: 22 / 60 · floor: at least 60

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · GitHub_M: 9.3; NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
Weaponized exploit exists
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
sangoma	freepbx	cpe:2.3:a:sangoma:freepbx

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

sangoma freepbxbefore 16.0.44
sangoma freepbx17.0.1 and later · before 17.0.23

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

FreePBX framework
- < 16.0.44, >= 17.0.1, < 17.0.23affected

Same product

sangoma: all records

Other highest-scoring records for the same primary product.

CVE-2025-57819FreePBX Affected by Authentication Bypass Leading to SQL Injection and RCEKEV
99Now
CVE-2019-19006Sangoma FreePBX 115.0.16.26 and below, 14.0.13.11 and below, 13.0.197.13 and below have Incorrect Access Control.KEV
86Now
CVE-2012-4869The callme_startcall function in recordings/misc/callme_page.php in FreePBX 2.9, 2.10, and earlier allows remote attackers to execute arbitr
51Plan

Published before and after this one in the same product

← EarlierCVE-2025-59056Sep 15, 2025 · FreePBX vulnerable to unauthenticated Denial of Service
26Monitor
← EarlierCVE-2025-59429Oct 14, 2025 · FreePBX core module vulnerable to reflected cross-site scripting via Asterisk HTTP Status page
34Monitor
Later →CVE-2024-58294Dec 11, 2025 · FreePBX 16 Authenticated Remote Code Execution via API Module
35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

Metasploit module ×3
Proof-of-concept repository on GitHub ×2

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Metasploit module	auxiliary/gather/freepbx_custom_extension_injectionFreePBX Custom Extension SQL Injectionauxiliary	2025-12-11
Metasploit module	exploit/unix/http/freepbx_custom_extension_rceFreePBX endpoint SQLi to RCEexploit	2025-12-11
Metasploit module	exploit/unix/http/freepbx_firmware_file_uploadFreePBX firmware file uploadexploit	2025-12-11
Proof-of-concept repository on GitHub	stars:1	2025-12-14
Proof-of-concept repository on GitHub	stars:1	2025-12-16

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

PublishedDec 9, 2025
MetasploitDec 11, 2025+1 d
First PoCDec 14, 2025+4 d
TodayOct 30, 2026+325 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

FreePBX/frameworkcommit 0422425

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

—

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2025-677367 days apartAuthenticated SQL Injection in FreePBX tts (Text To Speech) module
36Monitor
CVE-2024-582942 days apartFreePBX 16 Authenticated Remote Code Execution via API Module
35Monitor
CVE-2026-2821086 days apartFreePBX: Authenticated SQL Injection in CDR (Call Data Record) Reports
34Monitor
CVE-2025-5521185 days apartFreePBX Post-Authenticated Command Injection
25Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

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-secondary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1app.use("/admin", requireSession, adminRouter);
2

3// Route added later skips the middleware
4app.post("/admin-api/config", updateConfig);

Fixed

1const admin = express.Router();
2admin.use(requireSession, requireRole("admin"));
3

4admin.post("/config", updateConfig);
5app.use("/admin", admin);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

github.com/FreePBX/framework/commit/04224253156543cd9932b90458660b2f19fc0e35#diff-72f14a52840a61504a8e03cd195035b44e488aecd634b001bc6412a04bdc940bR20-R50

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Noroxi analysis

What does it mean in your environment?

We use this product, ask for help

Data sources and verification

CNA: GitHub_M

CVE.org (CNA)Feb 26, 2026, 4:21 PM UTC
CISA ADPFeb 26, 2026, 4:21 PM UTC
NVDSep 25, 2026, 7:10 PM UTC
FIRST EPSSOct 29, 2026, 12:00 AM UTC
MetasploitOct 30, 2026, 3:18 AM UTC
PoC-in-GitHubOct 30, 2026, 3:18 AM UTC

Each line is when that source was last processed for this record.