CVE-2015-4642

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2016-05-16 · updated 2026-06-17
Weakness: CWE-78

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.

Affected products

PHP: through 5.4.41; 5.5.0, 5.5.1, 5.5.2, 5.5.3, 5.5.4, 5.5.5 (+30)

References

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
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

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