CVE-2025-62521

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 4.2%, top 10% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Weaponized
10.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Metasploit, ssvc poc, public exploit)
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 10.0Exploit: Metasploit · ssvc poc · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
10.0
EG Score
10.0(medium)
EG Risk
86(Attend)
EG Risk 86/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation65% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
3%
EPSS %ILE
86%
KEV
Not listed

Published

December 17, 2025

Last Modified

December 18, 2025

Advisory Details (1)

Auto-updated Jul 25, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Unauthenticated RCE in Install Wizard <= 5.18.0 · Advisory · ChurchCRM/CRM · GitHub

https://github.com/ChurchCRM/CRM/security/advisories/GHSA-m8jq-j3p9-2xf3

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-01 04:15 UTCEPSS rescore
  2. 2026-07-30 16:27 UTCEPSS rescore
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  13. 2026-07-23 12:19 UTCOSV refresh
  14. 2026-07-23 03:00 UTCEG score recompute
  15. 2026-07-22 14:08 UTCEPSS rescore
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  1. 2026-07-15 01:59 UTCEPSS rescore
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  12. 2026-07-06 07:32 UTCOSV refresh
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  21. 2026-06-30 23:22 UTCEPSS rescore
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  37. 2026-06-18 17:52 UTCEPSS rescore
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  39. 2026-06-17 19:14 UTCOSV refresh
  40. 2026-06-17 17:52 UTCEPSS rescore
  41. 2026-06-16 17:52 UTCEPSS rescore
  42. 2026-06-15 17:48 UTCEPSS rescore
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  44. 2026-06-14 23:18 UTCEPSS rescore
  45. 2026-06-12 23:11 UTCEPSS rescore
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  66. 2026-05-31 00:16 UTCEPSS rescore
  67. 2026-05-31 00:16 UTCEPSS rescore
  68. 2026-05-29 17:25 UTCEG score recompute
  69. 2026-05-29 13:44 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/multi/http/churchcrm_install_unauth_rce✓ verified
    First seen Dec 17, 2025

    ChurchCRM Unauthenticated RCE via Setup Page

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-62521?
CVE-2025-62521 is a critical vulnerability published on December 17, 2025. 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…
When was CVE-2025-62521 disclosed?
CVE-2025-62521 was first published in the National Vulnerability Database on December 17, 2025, with the most recent update on December 18, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-62521 actively exploited?
CVE-2025-62521 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 13.8% of all scored CVEs.
What is the CVSS score of CVE-2025-62521?
CVE-2025-62521 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2025-62521?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-62521, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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