high
7.5
CWE
19
Advisory Published
Updated

CVE-2015-4026

First published: Tue Jun 09 2015(Updated: )

The pcntl_exec implementation in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 truncates a pathname upon encountering a \x00 character, which might allow remote attackers to bypass intended extension restrictions and execute files with unexpected names via a crafted first argument. NOTE: this vulnerability exists because of an incomplete fix for CVE-2006-7243.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
PHP<=5.4.40
PHP=5.4.39
PHP=5.5.0
PHP=5.5.0-alpha1
PHP=5.5.0-alpha2
PHP=5.5.0-alpha3
PHP=5.5.0-alpha4
PHP=5.5.0-alpha5
PHP=5.5.0-alpha6
PHP=5.5.0-beta1
PHP=5.5.0-beta2
PHP=5.5.0-beta3
PHP=5.5.0-beta4
PHP=5.5.0-rc1
PHP=5.5.0-rc2
PHP=5.5.1
PHP=5.5.2
PHP=5.5.3
PHP=5.5.4
PHP=5.5.5
PHP=5.5.6
PHP=5.5.7
PHP=5.5.8
PHP=5.5.9
PHP=5.5.10
PHP=5.5.11
PHP=5.5.12
PHP=5.5.13
PHP=5.5.14
PHP=5.5.18
PHP=5.5.19
PHP=5.5.20
PHP=5.5.21
PHP=5.5.22
PHP=5.5.23
PHP=5.5.24
PHP=5.6.0-alpha1
PHP=5.6.0-alpha2
PHP=5.6.0-alpha3
PHP=5.6.0-alpha4
PHP=5.6.0-alpha5
PHP=5.6.0-beta1
PHP=5.6.0-beta2
PHP=5.6.0-beta3
PHP=5.6.0-beta4
PHP=5.6.2
PHP=5.6.3
PHP=5.6.4
PHP=5.6.5
PHP=5.6.6
PHP=5.6.7
PHP=5.6.8
Apple iOS and macOS<=10.10.4
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux HPC Node=7.0
Red Hat Enterprise Linux HPC Node=7.1
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=7.1
Red Hat Enterprise Linux Workstation=7.0

Remedy

http://php.net/ChangeLog-5.php

Remedy

https://bugs.php.net/bug.php?id=68598

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2015-4026?

    CVE-2015-4026 is considered a critical vulnerability due to its potential to allow remote code execution.

  • How do I fix CVE-2015-4026?

    To fix CVE-2015-4026, update PHP to version 5.4.41 or later, 5.5.25 or later, or 5.6.9 or later.

  • What versions of PHP are affected by CVE-2015-4026?

    CVE-2015-4026 affects PHP versions prior to 5.4.41, all 5.5.x before 5.5.25, and all 5.6.x before 5.6.9.

  • Can CVE-2015-4026 be exploited remotely?

    Yes, CVE-2015-4026 can be exploited remotely by attackers to bypass extension restrictions.

  • Is CVE-2015-4026 specific to certain operating systems?

    CVE-2015-4026 is specifically noted in the context of multiple operating systems that use vulnerable versions of PHP.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203