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CVE-2025-62521

Churchcrm remote code execution

10.0 CRITICALPublic exploitEPSS 4.51%
  1. Published17 Dec 2025

Description

ChurchCRM is an open-source church management system. Prior to version 5.21.0, a pre-authentication remote code execution vulnerability in ChurchCRM's setup wizard allows unauthenticated attackers to inject arbitrary PHP code during the initial installation process, leading to complete server compromise. The vulnerability exists in `setup/routes/setup.php` where user input from the setup form is directly concatenated into a PHP configuration template without any validation or sanitization. Any parameter in the setup form can be used to inject PHP code that gets written to `Include/Config.php`, which is then executed on every page load. This is more severe than typical authenticated RCE vulnerabilities because it requires no credentials and affects the installation process that administrators must complete. Version 5.21.0 patches the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Churchcrm< 5.21.0

Remediation

Fixed in
Churchcrm≥ 5.21.0

References

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Frequently asked

Is CVE-2025-62521 being actively exploited?

CVE-2025-62521 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 4.51%.

How severe is CVE-2025-62521?

CVE-2025-62521 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 4.51% probability of exploitation.

Which products are affected by CVE-2025-62521?

Affected products include Churchcrm.

How do I fix CVE-2025-62521?

Upgrade affected software to a fixed version, for example Churchcrm 5.21.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-62521 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.