What is CVE-2019-19006?

CVE-2019-19006 is a critical-severity vulnerability in Sangoma Freepbx, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-11-21.

How severe is CVE-2019-19006?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2019-19006 known to be exploited?

Yes. CVE-2019-19006 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-02-03), indicating it is being actively exploited. 1 public proof-of-concept repositories are indexed.

Auth bypass in Sangoma Freepbx

CVE-2019-19006

Sangoma FreePBX 115.0.16.26 and below, 14.0.13.11 and below, 13.0.197.13 and below have Incorrect Access Control.

Vulnerability class: Broken Authentication

Published 2019-11-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.559 (99.0th percentile), scored 2026-10-18.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.366 · newest: 0.559 · change: +0.193

Affected products

Sangoma Freepbx

Weakness classification (CWE)

CWE-287 — Improper Authentication

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2026-02-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2026-02-24.

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public proof-of-concept exploits

gellanyhassan1/maadi_

References

www.freepbx.org/category/blog/ (Product)
wiki.freepbx.org/display/FOP/2019-11-20+Remote+Admin+Authentication+Bypass (Vendor Advisory)
community.freepbx.org/t/freepbx-security-vulnerability-sec-2019-001/62772 (Vendor Advisory)
pastebin.com/2CdsQMKW (Broken Link)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (Exploit, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2019-19006?: CVE-2019-19006 is a critical-severity vulnerability in Sangoma Freepbx, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-11-21.
How severe is CVE-2019-19006?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-19006 known to be exploited?: Yes. CVE-2019-19006 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-02-03), indicating it is being actively exploited. 1 public proof-of-concept repositories are indexed.