CVE-2026-73660
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk37th percentile - higher than 37% of all known CVEs
Summary
FreePBX before versions 16.0.6 and 17.0.5.4 has a vulnerability in the Text-To-Speech module that allows an administrator to save a TTS destination name that is HTML-encoded, decoded during dialplan generation, passed as an AGI argument, and used to build filenames in agi-bin/propolys-tts.agi. The destination name reaches a raw shell-command execution path, allowing arbitrary OS command execution as the asterisk user.
Risk Assessment
Risk of arbitrary OS command execution as the asterisk user, potentially leading to full system compromise.
Recommendation
Update FreePBX to versions 16.0.6 or 17.0.5.4, which include the fix.
Original NVD description (English source)
FreePBX is an open source IP PBX. Prior to 16.0.6 and 17.0.5.4, the FreePBX Text-To-Speech module allows an authenticated administrator to save a TTS destination name that is HTML-encoded for storage, decoded during dialplan generation, passed as an AGI argument, and used to build filenames inside agi-bin/propolys-tts.agi. The TTS destination name reaches a raw shell-command execution path, allowing arbitrary operating-system command execution as the asterisk service user. This issue is fixed in versions 16.0.6 and 17.0.5.4.