Critical severity · published Jul 23, 2025
CVE-2018-25114
osCommerce 2.3.4.1 Installer Unauthenticated Configuration File Injection PHP Code Execution
9.3
CVSS
4.6%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)4.6% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OM
Online Merchant · osCommerce
2.3.4.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-25114
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-25114
raw.githubusercontent.com
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/multi/http/oscommerce_installer_unauth_code_exec.rb
www.exploit-db.com
https://www.exploit-db.com/exploits/44374
www.oscommerce.com
https://www.oscommerce.com/
www.vulncheck.com
https://www.vulncheck.com/advisories/oscommerce-installer-unauth-config-file-injection-php-code-execution
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