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Vulnerability record · CVE-2015-4642 · published 16 May 2016

CVE-2015-4642: Php os command injection vulnerability

Php · Php

The escapeshellarg function in ext/standard/exec.c in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 on Windows allows remote attackers to execute arbitrary OS commands via a crafted string to an application that accepts command-line arguments for a call to the PHP system function.

9.8 CVSS 3.0 Critical EPSS 6.0% · top 6.9% CWE-78 · OS command injection
9.8CVSS 3.0 base score, v2 10.0
6.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The escapeshellarg function in ext/standard/exec.c in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 on Windows allows remote attackers to execute arbitrary OS commands via a crafted string to an application that accepts command-line arguments for a call to the PHP system function.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=d2ac264ffea5ca2e85640b6736e0c7cd4ee9a4a9
http://openwall.com/lists/oss-security/2015/06/18/6
http://php.net/ChangeLog-5.php
http://www.securityfocus.com/bid/75290
http://www.securitytracker.com/id/1032709
https://bugs.php.net/bug.php?id=69646 Exploit
https://security.gentoo.org/glsa/201606-10
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=d2ac264ffea5ca2e85640b6736e0c7cd4ee9a4a9
http://openwall.com/lists/oss-security/2015/06/18/6
http://php.net/ChangeLog-5.php
http://www.securityfocus.com/bid/75290
http://www.securitytracker.com/id/1032709
https://bugs.php.net/bug.php?id=69646 Exploit
https://security.gentoo.org/glsa/201606-10

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2015-4642), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.