CVEs / CVE-2025-57819
CVE-2025-57819: Sangoma FreePBX Authentication Bypass Vulnerability
- Known exploited in the CISA KEV catalog since 29 Aug 2025
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 95.2% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Sangoma FreePBX contains an authentication bypass vulnerability due to insufficiently sanitized user-supplied data allows unauthenticated access to FreePBX Administrator leading to arbitrary database manipulation and remote code execution.
Description
FreePBX is an open-source web-based graphical user interface. FreePBX 15, 16, and 17 endpoints are vulnerable due to insufficiently sanitized user-supplied data allowing unauthenticated access to FreePBX Administrator leading to arbitrary database manipulation and remote code execution. This issue has been patched in endpoint versions 15.0.66, 16.0.89, and 17.0.3.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| FreePBX endpoint | < 15.0.66 | — |
| FreePBX endpoint | < 16.0.89 | — |
| FreePBX endpoint | < 17.0.3 | — |
Exploitation
| In CISA KEV since | 29 Aug 2025 |
|---|---|
| Due date for US federal agencies | 19 Sep 2025 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-89, CWE-288 |
References
- CVE-2025-57819 on NVD
- CVE-2025-57819 in the CISA KEV catalog
- https://github.com/FreePBX/security-reporting/security/advisories/GHSA-m42g-xg4c-5f3h (cited by CISA)
- CVE-2025-57819 on OSV
- https://community.freepbx.org/t/security-advisory-please-lock-down-your-administrator-access/107203 Issue Tracking, Vendor Advisory
- https://github.com/FreePBX/security-reporting/security/advisories/GHSA-m42g-xg4c-5f3h Mitigation, Vendor Advisory
- https://github.com/watchtowrlabs/watchTowr-vs-FreePBX-CVE-2025-57819 Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-57819 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.