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Vulnerability record · CVE-2016-7479 · published 12 January 2017

CVE-2016-7479: Php use after free vulnerability

Php · Php

In all versions of PHP 7, during the unserialization process, resizing the 'properties' hash table of a serialized object may lead to use-after-free. A remote attacker may exploit this bug to gain arbitrary code execution.

9.8 CVSS 3.0 Critical EPSS 42% · top 1.4% CWE-416 · Use after free
9.8CVSS 3.0 base score, v2 7.5
42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In all versions of PHP 7, during the unserialization process, resizing the 'properties' hash table of a serialized object may lead to use-after-free. A remote attacker may exploit this bug to gain arbitrary code execution.

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://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php- Third Party Advisory
http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf ExploitTechnical DescriptionThird Party Advisory
http://www.securityfocus.com/bid/95151 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037659
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=73092 Issue TrackingPermissions Required
https://security.netapp.com/advisory/ntap-20180112-0001/
https://www.youtube.com/watch?v=LDcaPstAuPk Technical Description
http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php- Third Party Advisory
http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf ExploitTechnical DescriptionThird Party Advisory
http://www.securityfocus.com/bid/95151 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037659
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=73092 Issue TrackingPermissions Required
https://security.netapp.com/advisory/ntap-20180112-0001/
https://www.youtube.com/watch?v=LDcaPstAuPk Technical Description

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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-2016-7479), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.