Is CVE-2026-46376 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-46376 being exploited in the wild.

How severe is CVE-2026-46376?

Informational severity, with a CVSS score of 9.1, published 29 May 2026.

Which products and versions are affected?

Sangoma User Management Module 15.0.42 to < 16.0.45, 17.0.x < 17.0.7.

Is there a fix for CVE-2026-46376?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-46376 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-46376?

Check whether you run Sangoma User Management Module at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-46376: FreePBX userman hard-coded credentials in User Control Panel

Q: Is there a fix for CVE-2026-46376?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

Q: How is CVE-2026-46376 attacked?

It is attacked over the network, in a network appliance.

Q: Am I affected by CVE-2026-46376?

Check whether you run Sangoma User Management Module at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-46376 · Severity: info · CVSS 9.1 · Published 2026-05-29

FreePBX is an open-source phone system used by businesses to manage their telecommunications. A security flaw in the User Control Panel (UCP) allows unauthorized individuals to log in using default, hard-coded credentials if an administrator has not manually changed them. This could allow an attacker to gain control over user settings and potentially intercept or disrupt communication services.

Vendors: Sangoma.

Quick answers

Is CVE-2026-46376 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-46376 being exploited in the wild.
How severe is CVE-2026-46376?: Informational severity, with a CVSS score of 9.1, published 29 May 2026.
Which products and versions are affected?: Sangoma User Management Module 15.0.42 to < 16.0.45, 17.0.x < 17.0.7.
Is there a fix for CVE-2026-46376?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-46376 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-46376?: Check whether you run Sangoma User Management Module at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A vulnerability in the FreePBX 'userman' module involves the use of hard-coded credentials (CWE-798) within the User Control Panel (UCP) generic template setup process. When an administrator enables UCP generic templates, the system utilizes static sample credentials that remain active unless manually rotated. A remote, unauthenticated attacker can use these known credentials to gain unauthorized access to the UCP interface. This allows for high impact on confidentiality and integrity of the user management system. The issue is resolved in versions 16.0.45 and 17.0.7 by randomizing these initial passwords.

Affected products

FreePBX FreePBX userman module 15.0.42 to < 16.0.45, 17.0.x < 17.0.7

Timeline

2021: other: Vulnerability introduced into the codebase
2026-05-15: advisory: Vendor advisory published via GitHub
2026-05-29: disclosed: CVE published to NVD

References

https://github.com/FreePBX/security-reporting/security/advisories/GHSA-m55x-h47x-v3gx

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