CVE-2018-25114Known exploitationPublic exploitNetwork attack vector

Unauthenticated PHP execution via installer configuration write

Published Jul 23, 2025 · Updated Apr 7, 2026

Code injection in osCommerce Online Merchant 2.3.4.1 allows remote attackers to execute PHP through the exposed installer. The unauthenticated install_4.php workflow writes a crafted DB_DATABASE value into includes/configure.php without neutralizing PHP syntax. Exploitation requires the install directory to remain reachable and the configuration file to be writable, after which including it runs the payload with web-server privileges.

CVSS severity9.3
Critical
EPSS probability4.12%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in osCommerce Online Merchant 2.3.4.1 allows remote attackers to execute PHP through the exposed installer. The unauthenticated install_4.php workflow writes a crafted DB_DATABASE value into includes/configure.php without neutralizing PHP syntax. Exploitation requires the install directory to remain reachable and the configuration file to be writable, after which including it runs the payload with web-server privileges.

The record

CVE
CVE-2018-25114
Published
Jul 23, 2025
Updated
Apr 7, 2026
Vendor
osCommerce
Product
osCommerce Online Merchant
Classifications
CWE-94, CWE-434, CAPEC-242, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.3.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

osCommerce · osCommerce Online Merchantversion=2.3.4.1

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-434Unrestricted Upload of File with Dangerous Type
CAPEC-242Code Injection
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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