What’s Vulnerable › Vulnerabilities

CVE-2026-73662: Authenticated FreePBX Music RCE via mpg123 and Asterisk Call Files

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-10-09
• Weakness: CWE-78

Description

FreePBX is an open source IP PBX. From 17.0.1 until 17.0.7, the FreePBX Music on Hold module permits dangerous command-line options for /usr/bin/mpg123 and other allowed players in validateCustomConfiguration() in Music.class.php. An authenticated administrator can use options that write files, open control channels, or create Asterisk call files because applicationUsesDisallowedPlayerOption() does not reject those arguments, resulting in arbitrary command execution as the asterisk service user. This issue is fixed in version 17.0.7.

Affected products

• Sangoma FreePBX: from 17.0.1 before 17.0.7 — fixed in 17.0.7

How to fix

Upgrade to a fixed version: Sangoma FreePBX 17.0.7. Check the vendor advisory for mitigations.

References

• https://github.com/FreePBX/music/commit/9f45605982202a34244ff22c4f635af0dfc1a733
• https://github.com/FreePBX/security-reporting/security/advisories/GHSA-p97w-rq48-p8q2

Get alerted when CVE-2026-73662 or the next vulnerability affects your stack