CVE-2019-19006
Published: February 3, 2026
Official Description
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 Advisory
Sangoma FreePBX Improper Authentication Vulnerability
Sangoma FreePBX contains an improper authentication vulnerability that potentially allows unauthorized users to bypass password authentication and access services provided by the FreePBX admin.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Risk Analysis
This critical improper authentication vulnerability in Sangoma FreePBX allows unauthorized users to bypass password authentication and gain access to FreePBX admin services. With a CVSS score of 9.8 and a high EPSS score, this vulnerability is extremely severe and has a high likelihood of exploitation. Its inclusion in CISA's KEV catalog confirms active exploitation.
This vulnerability is actively exploited in the wild. It is remotely exploitable with low attack complexity and no user interaction required.
Administrators should apply available patches for Sangoma FreePBX immediately. Implement strong authentication policies and network segmentation to protect FreePBX instances.
Technical Analysis
CVE-2019-19006 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CISA has added CVE-2019-19006 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-19006 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1