CVE•Published 2026-05-29•Modified 2026-06-01•1 article on news•6 live references•NVD data

CVE-2026-46376Sangoma · Freepbx

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

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Weaknesses (CWE)

CWE-798Use of Hard-coded Credentials

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.

Timeline

Published 2026-05-29

Modified 2026-06-01

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-46376

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Sangoma Freepbx"

All exposed Sangoma Freepbx instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Freepbx"

HTTP body or banner mentions "Freepbx" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-46376