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TI-2026-51747 Aliases CVE-2026-73663

FreePBX: Unauthenticated SQL injection in FreePBX missedcall via inbound Caller ID name leads to administrator takeover

Priority MEDIUM 48CWE-89Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
SQL injection
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-89.

Summary

FreePBX is an open source IP PBX. From 16.0.0 until 16.0.11 and 17.0.4, the FreePBX missedcall module places the inbound Caller ID name from crafted SIP From headers into the missedcalllog INSERT in agi-bin/missedcallnotify.php without escaping or bound parameters. An unauthenticated caller can inject SQL when a monitored extension goes unanswered, corrupting the database and modifying FreePBX administrator accounts to obtain unauthorized remote access. This issue is fixed in versions 16.0.11 and 17.0.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0038 32nd percentileScored 2026-11-08
Fix Fixed missedcall (FreePBX): 16.0.11, 17.0.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FreePBXmissedcallbefore 16.0.11; 17.0.1 to before 17.0.416.0.11, 17.0.4Patch availableCNA
  • missedcall VendorFreePBX Affected before 16.0.11; 17.0.1 to before 17.0.4 Fixed in 16.0.11, 17.0.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:sangoma:freepbx:*:*:*:*:*:*:*:*16.0 to before 16.0.11; 17.0 to before 17.0.4VulnerableSangoma
  • cpe:2.3:a:sangoma:freepbx:*:*:*:*:*:*:*:* Versions 16.0 to before 16.0.11; 17.0 to before 17.0.4 Vulnerable ·Sangoma

Remediation

  • Fix · CNA missedcall (FreePBX) Fixed in 16.0.11, 17.0.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-73663
  2. 2026-10-09 CVSS score added · NVD
  3. 2026-10-11 EPSS moved to the below the 50th percentile

References

Patch 2

Advisory 1

  • TI-2025-35702 FreePBX Affected by Authentication Bypass Leading to SQL Injection and RCE KEVCVSS 4.0CRITICAL 10.0
  • TI-2025-39763 FreePBX Administration GUI is Vulnerable to Authenticated Command Injection KEVCVSS 4.0HIGH 8.6
  • TI-2024-38391 FreePBX 16 Authenticated Remote Code Execution via API Module CVSS 4.0HIGH 8.7
  • TI-2014-06023 htdocs_ari/includes/login.php in the ARI Framework module/Asterisk Recording Interface… CVSS 2.0HIGH 10.0
  • TI-2025-36981 FreePBX core module vulnerable to reflected cross-site scripting via Asterisk HTTP Status page CVSS 4.0HIGH 8.5
  • TI-2025-38110 FreePBX Endpoint Manager vulnerable to authenticated arbitrary file upload via fwbrand parameter CVSS 4.0HIGH 8.6
See all 55 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences