Historical catalog analysis: CISA added this entry on February 03, 2026. The entry reflects catalog information retrieved on August 31, 2026, not a snapshot archived on the inclusion date. Check current vendor guidance before acting.
What the vulnerability is
CVE-2019-19006 is an improper authentication vulnerability (CWE-287) identified in Sangoma FreePBX. This flaw potentially allows an unauthorized user to bypass password authentication requirements, granting them access to services typically reserved for the FreePBX administrator.
Exposure and applicability
This vulnerability is relevant to healthcare organizations that utilize Sangoma FreePBX for their Voice over IP (VoIP) and internal communication infrastructure. In a clinical environment, administrative access to telephony systems can be critical; unauthorized access could lead to the disruption of patient care coordination, interception of sensitive communications, or unauthorized modification of call routing and directory services.
Remediation priorities
Based on our analysis, healthcare IT and security leaders should prioritize the following actions to reduce exposure:
- Apply Vendor Mitigations: The primary priority is to implement the mitigations provided by Sangoma. This addresses the root cause of the authentication bypass.
- Review Cloud Service Configurations: For organizations utilizing FreePBX via cloud services, we recommend reviewing configurations in alignment with BOD 22-01 guidance to ensure administrative interfaces are not unnecessarily exposed to the public internet.
- Evaluate Product Viability: In instances where mitigations cannot be applied or are unavailable for a specific deployment, organizations should evaluate whether to discontinue use of the product to eliminate the risk.
How to validate remediation
To verify that exposure has been reduced, administrators should coordinate with their network security teams to confirm that vendor-supplied updates have been successfully deployed. Validation may include verifying the current software version against the vendor’s patched release list and confirming that administrative interfaces are restricted to authorized management networks via access control lists (ACLs).
Note: Version checks alone do not guarantee total security, as they only confirm the presence of a patch and not the overall security posture of the system.
Limits and open questions
It remains unknown whether this vulnerability has been actively utilized in ransomware campaigns. Additionally, while CISA has established a remediation deadline for federal agencies (2026-02-24), this date is not a legal requirement for private healthcare providers, though it serves as a benchmark for risk management. There are inherent residual risks associated with any administrative interface exposed to a network; therefore, patching should be part of a broader defense-in-depth strategy.
Source and editorial note
CVE-2019-19006: Sangoma FreePBX Improper Authentication Vulnerability · Source date: February 03, 2026 · Retrieved August 31, 2026.
Material facts are tied to the cited primary source. Recommendations are independent defensive analysis unless attributed to the source. Confirm consequential decisions against current authoritative guidance.
Archive date: February 06, 2026. The displayed post date is assigned three days after the source date to organize this retrospective archive; it does not mean this site published the analysis then. First published by this site: September 19, 2026 at 01:24 UTC.
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