FreePBX: Authenticated Remote Code Execution in FreePBX Music on Hold (MoH) Module (CVE-2026-45562) | HOL Guard CVE

High · CVSS 7.7CVE-2026-45562

FreePBX: Authenticated Remote Code Execution in FreePBX Music on Hold (MoH) Module

Answer in brief

CVE-2026-45562 records a High severity (CVSS 7.7) vulnerability in FreePBX: Authenticated Remote Code Execution in FreePBX Music on Hold (MoH) Module. The current sources do not mark it as known exploited. The current feed maps FreePBX/security-reporting (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 28, 2026Updated Sep 28, 2026Source checked Sep 28, 2026First seen by HOL Sep 28, 2026Material review Sep 28, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.7
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 7.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps FreePBX/security-reporting (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
FreePBX/security-reportinggeneric	<16.0.4 \|\| <17.0.6	16.0.4, 17.0.6

Recommended response

Check inventory. Check lockfiles and deployed manifests for FreePBX/security-reporting.
Review the reported fix. Update FreePBX/security-reporting to 16.0.4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 28, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.