CISA KEV · Known exploitedCritical

CVE-2025-57819

Sangoma FreePBX

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: 10
EPSS: 88.3%
CISA KEV: Listed
Published: 2025.08.29

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability88.3%

Technical severityCVSS 10

Vulnerability overview

Affected product and versions

Product: Sangoma FreePBX
Affected versions: < 15.0.66, < 16.0.89, < 17.0.3, >= 15.0 < 15.0.66, >= 16.0 < 16.0.89, >= 17.0 < 17.0.3
Fixed versions: 15.0.66, 16.0.89, 17.0.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA 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.

Due date: 2025.09.19

1
Identify
Confirm that Sangoma FreePBX and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE: CWE-288, CWE-89
KEV added: 2025.08.29
Ransomware use: 미확인