What is CVE-2019-16964?

CVE-2019-16964 is a high-severity vulnerability in Fusionpbx, classified under OS Command Injection. CVSS score: 8.8/10. Published 2019-10-21.

How severe is CVE-2019-16964?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Fusionpbx

CVE-2019-16964

app/call_centers/cmd.php in the Call Center Queue Module in FusionPBX up to 4.5.7 suffers from a command injection vulnerability due to a lack of input validation, which allows authenticated attackers (with at least the permission call_center_queue_add or call_center_queue_edit) to execute any commands on the host as www-data.

Vulnerability class: Command Injection (OS Command Injection)

Published 2019-10-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.020 (80.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Fusionpbx

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

github.com/fusionpbx/fusionpbx/commit/2f9e591a4034c3aea70185dcab837946096449bf (Patch)
resp3ctblog.wordpress.com/2019/10/19/fusionpbx-sofia-api-command-injection-1/ (Third Party Advisory)

Frequently asked questions

What is CVE-2019-16964?: CVE-2019-16964 is a high-severity vulnerability in Fusionpbx, classified under OS Command Injection. CVSS score: 8.8/10. Published 2019-10-21.
How severe is CVE-2019-16964?: High severity. CVSS v3 base score is 8.8 out of 10.