Type Vulnerability
Sangoma FreePBX contains an improper authentication vulnerability that potentially allows unauthorised users to bypass password authentication and access services provided by the FreePBX admin.
Sangoma · Auth bypass
Sangoma FreePBX Authentication Bypass Vulnerability
CVE-2025-57819
What this means
This is rated critical severity (10 out of 10). It is on the known-exploited catalogue, which means attacks using it have already been seen. Ask IT whether Sangoma Freepbx is in your estate, and treat that as the priority.
Full vendor 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.
Scoring and exploitation
10.0/ 10
CVSS 4.0 base scoreCritical
Exploitable over the network without any account, and no one has to click or open anything. High impact on confidentiality, integrity, availability, subsequent confidentiality, subsequent integrity and subsequent availability.
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
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityLowAC:L
Attack requirementsNoneAT:N
Privileges requiredNonePR:N
User interactionNoneUI:N
Impact
Longer bar: more harm
ConfidentialityHighVC:H
IntegrityHighVI:H
AvailabilityHighVA:H
Subsequent confidentialityHighSC:H
Subsequent integrityHighSI:H
Subsequent availabilityHighSA:H
- Not reported
- Exploited in the wild
- Yes — confirmed exploitation (US CISA )
- Not reported
- Listed product
- Sangoma FreePBX
Weaknesses
CWE-89CWE-288
Affected products ()
- Sangoma Freepbx
Show the raw CPE strings (1)
- cpe:2.3:a:sangoma:freepbx:*:*:*:*:*:*:*:*
References
4 links from the CVE record, grouped by site; the vendor's advisory comes first.
community.freepbx.org1 linkVendor advisory
- 107203 (opens in a new tab)Issue Tracking · Vendor Advisory
github.com2 linksVendor advisory
- GHSA-m42g-xg4c-5f3h (opens in a new tab)Mitigation · Vendor Advisory
- watchTowr-vs-FreePBX-CVE-2025-57819 (opens in a new tab)Exploit · Third Party Advisory
cisa.gov1 link
- known-exploited-vulnerabilities-catalog (opens in a new tab)US Government Resource