Security readout for executives and security teams
Plain-English summary
FreePBX systems running affected endpoint versions can be compromised without login. An attacker may reach administrator functionality, alter database content, and achieve remote code execution. Because CISA lists this CVE as known exploited and patches are identified, exposed FreePBX administration should be treated as an urgent incident-risk item.
Executive priority
Prioritize immediate patching and access restriction. This is a remotely reachable, unauthenticated critical flaw with known exploitation and potential full system impact.
Technical view
The issue combines authentication bypass and SQL injection in FreePBX endpoint versions before 15.0.66, 16.0.89, and 17.0.3. The CVSS 4.0 score is 10.0 with network attack vector, no privileges, no user interaction, and high impact to vulnerable and subsequent systems.
Likely exposure
Highest exposure is FreePBX 15, 16, or 17 deployments with affected endpoint versions and reachable administrator access. Internet-facing administration materially increases risk. The bundle does not identify other affected products or supported platforms.
Exploitation context
Active exploitation is supported by CISA KEV inclusion. The source bundle also references public exploit material, but no operational details are needed for defense. Treat unpatched, reachable systems as potentially compromised until validated.
Researcher notes
Evidence supports CWE-288 and CWE-89, unauthenticated administrative access, arbitrary database manipulation, and RCE. Do not assume scope beyond the listed endpoint versions. Public exploit references increase validation urgency but should not drive unsafe testing.
Mitigation direction
- Update endpoint to 15.0.66, 16.0.89, or 17.0.3 or later.
- Lock down FreePBX Administrator access to trusted networks or VPN.
- Follow FreePBX advisory guidance for any additional hardening or recovery steps.
- Review systems for unauthorized database, admin, or configuration changes.
- Apply CISA KEV remediation expectations if your organization is in scope.
Validation and detection
- Inventory FreePBX 15, 16, and 17 deployments and endpoint versions.
- Confirm endpoint versions meet or exceed the patched releases.
- Verify FreePBX Administrator is not publicly reachable.
- Review administrative, web, and database activity for suspicious changes.
- Check vendor and CISA sources for updated guidance.
Public sources used
Michael Williams reviewed this cited source version on .
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-288: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-57819 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (4.0)
- Known Exploited
- Yes
- Published
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
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
10CriticalVector: 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
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/FreePBX/security-reporting/security/advisories/GHSA-m42g-xg4c-5f3hCVE reference · x_refsource_CONFIRM
- https://community.freepbx.org/t/security-advisory-please-lock-down-your-administrator-access/107203CVE reference · x_refsource_MISC
- https://github.com/watchtowrlabs/watchTowr-vs-FreePBX-CVE-2025-57819CVE reference · exploit
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-57819CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Authentication Bypass Using an Alternate Path or Channel
Authentication Bypass Using an Alternate Path or Channel represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.