CVE-2026-73662 Authenticated FreePBX Music RCE via mpg123 and Asterisk Call Files
Authenticated administrators can execute arbitrary commands as the asterisk user via unsafe mpg123 options in the FreePBX Music on Hold module.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73662?
CVE-2026-73662 is a high-severity command injection vulnerability in Sangoma Freepbx, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2026-73662?
It affects 1 product.
Products include Sangoma Freepbx.
How do I fix CVE-2026-73662?
No fix has been published for CVE-2026-73662 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-73662 being exploited?
There is no known exploitation of CVE-2026-73662 in the wild and no public exploit code.
Other vulnerabilities in Sangoma Freepbx
- CVE-2025-57819 Sangoma FreePBX Authentication Bypass
- CVE-2019-19006 Sangoma FreePBX Improper Authentication
- CVE-2026-73663 FreePBX: Unauthenticated SQL injection in FreePBX missedcall via inbound Caller ID name leads to administrator takeover
- CVE-2026-73665 FreePBX UCP: Unauthenticated remote code execution via socket.io namespace auth bypass and AMI action injection
- CVE-2026-46376 FreePBX: Unauthenticated Use of Hard-Coded Credentials Vulnerability in FreePBX UCP Interface
Sources
Also known as GHSA-p97w-rq48-p8q2.