CVE-2026-45562

FreePBX is an open source IP PBX. Prior to versions 16.0.4 and 17.0.6, the FreePBX Music on Hold (MoH) module contains a critical security flaw that allows authenticated attackers to execute arbitrary system commands with the privileges of the Asterisk service. Authentication with an existing FreePBX administrator account is required. The root cause lies in the fact that the module accepts a POST parameter that defines a custom Asterisk application, which is then stored in the database without any sanitization. Later, this data is written directly to the musiconhold_additional.conf configuration file without validation. Since Asterisk reads this configuration file and executes the specified application, an attacker can inject arbitrary commands that will be executed with Asterisk's permissions. This issue has been patched in versions 16.0.4 and 17.0.6.

CVSS v3 7.2 HIGH

7.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FreePBX/security-reporting/security/advisories/GHSA-4g6v-whq9-944g	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:sangoma:freepbx::::::::
	cpe:2.3:a:sangoma:freepbx::::::::

History

16 Oct 2026, 18:22

Type	Values Removed	Values Added
First Time		Sangoma Sangoma freepbx
CPE		cpe:2.3:a:sangoma:freepbx::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.2
References	~~() https://github.com/FreePBX/security-reporting/security/advisories/GHSA-4g6v-whq9-944g -~~	() https://github.com/FreePBX/security-reporting/security/advisories/GHSA-4g6v-whq9-944g - Mitigation, Vendor Advisory

28 Sep 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-28 18:17

Updated : 2026-10-16 18:22

NVD link : CVE-2026-45562

Mitre link : CVE-2026-45562

CVE.ORG link : CVE-2026-45562

JSON object : View

Products Affected

sangoma

freepbx

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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