CVE-2018-25114

CRITICAL EPSS 84.8%
Published Jul 23, 202511mo ago · Modified Jun 17, 20262w ago
9.3 CVSS 4.0
Critical
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Published Jul 23, 2025 11mo ago
Last Modified Jun 17, 2026 2w ago

Description

A remote code execution vulnerability exists within osCommerce Online Merchant version 2.3.4.1 due to insecure default configuration and missing authentication in the installer workflow. By default, the /install/ directory remains accessible after installation. An unauthenticated attacker can invoke install_4.php, submit crafted POST data, and inject arbitrary PHP code into the configure.php file. When the application later includes this file, the injected payload is executed, resulting in full server-side compromise.

CVSS Details

Base Score
9.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
84.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt
CWE-94 Improper Control of Generation of Code (Code Injection) Injection

References 4

  • raw.githubusercontent.com https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/multi/http/oscommerce_installer_unauth_code_exec.rb
  • exploit-db.com https://www.exploit-db.com/exploits/44374
  • oscommerce.com https://www.oscommerce.com/
  • vulncheck.com https://www.vulncheck.com/advisories/oscommerce-installer-unauth-config-file-injection-php-code-execution

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.