CVE-2019-19006: Sangoma FreePBX Improper Authentication Vulnerability

In short

Sangoma FreePBX has a weakness classified as improper authentication (CWE-287). CISA added it to its Known Exploited Vulnerabilities catalog on 2026-02-03. NVD lists CVSS 3.1 at 9.8 CRITICAL.

What it is

“Sangoma FreePBX contains an improper authentication vulnerability that potentially allows unauthorized users to bypass password authentication and access services provided by the FreePBX admin.” — CISA KEV, retrieved 2026-11-01

“Sangoma FreePBX 115.0.16.26 and below, 14.0.13.11 and below, 13.0.197.13 and below have Incorrect Access Control.” — NVD, retrieved 2026-11-01

Who is affected

Sangoma FreePBX. NVD lists the following versions as affected:

• Versions from 13.0.0.0 inclusive, through 13.0.197.13
• Versions from 14.0.0.0 inclusive, through 14.0.13.11
• Versions from 15.0.0.0 inclusive, through 15.0.16.26

Exploitation status

CISA KEV added: 2026-02-03. Known ransomware campaign use: Not reported by CISA. Due date CISA set for US federal civilian agencies: 2026-02-24.

Scores

NVD CVSS 3.1: 9.8 CRITICAL; vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source [email protected].

EPSS by FIRST: 55.95%; percentile 99.05; score date 2026-10-31. EPSS estimates the probability of exploitation in the next 30 days.

CWE: CWE-287.

Timeline

CISA 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.” — CISA KEV

What to do

• Confirm whether you run Sangoma FreePBX and which version.
• Apply the vendor update or mitigation in the advisory.
• Follow CISA’s required action.
• Review the vendor guidance on signs of compromise.
• Track the fix through completion.

References

• Vendor Advisory: https://community.freepbx.org/t/freepbx-security-vulnerability-sec-2019-001/62772
• Vendor Advisory: https://wiki.freepbx.org/display/FOP/2019-11-20+Remote+Admin+Authentication+Bypass
• NVD detail
• CVE.org record
• CISA KEV catalog

Sources and dates

CISA Known Exploited Vulnerabilities Catalog, version 2026.10.30; retrieved 2026-11-01. CISA KEV data: CC0 1.0. No endorsement by CISA.

NVD retrieved: 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.

EPSS scores by FIRST; score date 2026-10-31.