FreePBX: Unauthenticated Use of Hard-Coded Credentials Vulnerability in FreePBX UCP Interface (CVE-2026-46376) | HOL Guard CVE

Critical · CVSS 9.3CVE-2026-46376

FreePBX: Unauthenticated Use of Hard-Coded Credentials Vulnerability in FreePBX UCP Interface

Answer in brief

CVE-2026-46376 records a Critical severity (CVSS 9.3) vulnerability in FreePBX: Unauthenticated Use of Hard-Coded Credentials Vulnerability in FreePBX UCP Interface. 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 May 29, 2026Updated Sep 28, 2026Source checked Sep 28, 2026First seen by HOL Sep 28, 2026Material review Sep 28, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.3. 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	>=15.0.42 <16.0.45 \|\| >=17.0.1 <17.0.7	16.0.45, 17.0.7

Recommended response

Check inventory. Check lockfiles and deployed manifests for FreePBX/security-reporting.
Review the reported fix. Update FreePBX/security-reporting to 16.0.45 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
May 29, 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. From 15.0.42 to before 16.0.45 and 17.0.7, unauthenticated users may be able to access the User Control Panel (UCP) using hard-coded initial template credentials if these were not immediately changed by the Administrator who enabled UCP. Authenticated access to ACP is required for the initial setup of UCP generic templates, but after that, without further steps by the admin, unauthenticated users may be able to gain access. This vulnerability is fixed in 16.0.45 and 17.0.7.

Quoted source text, attributed separately from HOL analysis.