High [CVE-2026-73662] FreePBX Music on Hold: Arbitrary command execution by authenticated administrator
This high-severity Red Hat Linux advisory covers CVE-2026-73662.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
Summary
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.
An authenticated administrator can exploit dangerous command-line options when configuring media players, such as /usr/bin/mpg123. The CVE-2026-73662 vulnerability is in the FreePBX Music on Hold module's PHP code (Music.class.php), which fails to sanitize command-line options passed to media players.
The Red Hat mpg123 and asterisk packages are not affected because the vulnerable code is solely in FreePBX's web interface, which is not shipped in any Red Hat product. mpg123 is merely invoked by FreePBX and behaves as designed. Red Hat severity: Important — CVSS 7.2 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
Weakness: CWE-78. Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 24 days ago·verify at source
Mitigation checklist
- Red Hat products are not affected by this vulnerability. The vulnerable code is in the FreePBX Music on Hold module, which is not shipped in any Red Hat product.
Official advisory · high-confidence parse· fetched 24 days ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.