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Exploited vulnerability · CISA KEV

Is CVE-2019-19006 exploited? Yes: in CISA KEV since 3 Feb 2026

Gociux · Sangoma FreePBX · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2019-19006, Sangoma FreePBX Improper Authentication Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Feb 2026, 2266 days after it was published. It affects Sangoma FreePBX. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 3 Feb 2026
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due24 Feb 2026BOD 22-01 deadline

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.

VendorSangoma (4 exploited CVEs in KEV)
ProductFreePBX
Vulnerability Sangoma FreePBX Improper Authentication Vulnerability
WeaknessCWE-287
Published21 Nov 2019
Added to KEV3 Feb 2026
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for FreePBX in your asset inventory, including appliances and cloud images. Stack check lists every exploited Sangoma CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 21 Nov 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for Sangoma.

Other exploited CVEs in FreePBX

References

Questions

Is CVE-2019-19006 being exploited?

Yes. CISA added CVE-2019-19006 to the Known Exploited Vulnerabilities catalog on 3 Feb 2026, which means there is reliable evidence of exploitation in the wild.

Is CVE-2019-19006 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2019-19006?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check Sangoma's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected FreePBX and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in February 2026 · Sangoma scorecard · act-now radar.

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