CVE-2025-57819
Sangoma FreePBX Authentication Bypass Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 19 September 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 4.0
- 10.0 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 95.21% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 3 September 2026
- CISA KEV
- Listed 29 August 2025 · due 19 September 2025
- Weakness
- CWE-89, CWE-288
- Affected
- sangoma/freepbx
- Source
- security-advisories@github.com
EPSS moved from 95.0% on 18 October 2026 to 95.2% on 29 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://github.com/FreePBX/security-reporting/security/advisories/GHSA-m42g-xg4c-5f3h ; https://nvd.nist.gov/vuln/detail/CVE-2025-57819
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://community.freepbx.org/t/security-advisory-please-lock-down-your-administrator-access/107203Issue Tracking, Vendor Advisory
- https://github.com/FreePBX/security-reporting/security/advisories/GHSA-m42g-xg4c-5f3hMitigation, Vendor Advisory
- https://github.com/watchtowrlabs/watchTowr-vs-FreePBX-CVE-2025-57819Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-57819US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.