Vulnerability in Freepbx Security-Reporting
CVE-2026-46376
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (41.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Freepbx Security-Reporting — versions >= 15.0.42, < 16.0.45, >= 17.0.1, < 17.0.7
- Sangoma Freepbx
Weakness classification (CWE)
Public proof-of-concept exploits
References
- https://github.com/FreePBX/security-reporting/security/advisories/GHSA-m55x-h47x-v3gx (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-46376?
- CVE-2026-46376 is a critical-severity vulnerability in Freepbx Security-Reporting, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-05-29.
- How severe is CVE-2026-46376?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-46376 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.