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Vulnerability record · CVE-2004-0542 · published 6 August 2004

CVE-2004-0542: Php vulnerability

Php · Php

PHP before 4.3.7 on Win32 platforms does not properly filter all shell metacharacters, which allows local or remote attackers to execute arbitrary code, overwrite files, and access internal environment variables via (1) the "%", "|", or ">" characters to the escapeshellcmd function, or (2) the "%" character to the escapeshellarg function.

10.0 CVSS 2.0 High EPSS 31% · top 1.8%
10.0CVSS 2.0 base score
31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

PHP before 4.3.7 on Win32 platforms does not properly filter all shell metacharacters, which allows local or remote attackers to execute arbitrary code, overwrite files, and access internal environment variables via (1) the "%", "|", or ">" characters to the escapeshellcmd function, or (2) the "%" character to the escapeshellarg function.

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.idefense.com/application/poi/display?id=108 Not Applicable
http://www.php.net/release_4_3_7.php PatchRelease NotesVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/16331 Third Party AdvisoryVDB Entry
http://www.idefense.com/application/poi/display?id=108 Not Applicable
http://www.php.net/release_4_3_7.php PatchRelease NotesVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/16331 Third Party AdvisoryVDB Entry

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2004-0542), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.