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Vulnerability record · CVE-2016-7131 · published 12 September 2016

CVE-2016-7131: Php null pointer dereference vulnerability

Php · Php

ext/wddx/wddx.c in PHP before 5.6.25 and 7.x before 7.0.10 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly have unspecified other impact via a malformed wddxPacket XML document that is mishandled in a wddx_deserialize call, as demonstrated by a tag that lacks a < (less than) character.

7.5 CVSS 3.1 High EPSS 8.8% · top 5.0% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score, v2 5.0
8.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
22References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

ext/wddx/wddx.c in PHP before 5.6.25 and 7.x before 7.0.10 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly have unspecified other impact via a malformed wddxPacket XML document that is mishandled in a wddx_deserialize call, as demonstrated by a tag that lacks a < (less than) character.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

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

References

LinkTags
http://openwall.com/lists/oss-security/2016/09/02/9 Mailing List
http://rhn.redhat.com/errata/RHSA-2016-2750.html Third Party Advisory
http://www.php.net/ChangeLog-5.php Release Notes
http://www.php.net/ChangeLog-7.php Release Notes
http://www.securityfocus.com/bid/92768 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036680 Third Party AdvisoryVDB Entry
https://bugs.php.net/bug.php?id=72790 ExploitIssue Tracking
https://github.com/php/php-src/commit/0c8a2a2cd1056b7dc403eacb5d2c0eec6ce47c6f PatchVendor Advisory
https://github.com/php/php-src/commit/a14fdb9746262549bbbb96abb87338bacd147e1b?w=1 Issue TrackingPatch
https://security.gentoo.org/glsa/201611-22 Third Party Advisory
https://www.tenable.com/security/tns-2016-19 Third Party Advisory
http://openwall.com/lists/oss-security/2016/09/02/9 Mailing List
http://rhn.redhat.com/errata/RHSA-2016-2750.html Third Party Advisory
http://www.php.net/ChangeLog-5.php Release Notes
http://www.php.net/ChangeLog-7.php Release Notes
http://www.securityfocus.com/bid/92768 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036680 Third Party AdvisoryVDB Entry
https://bugs.php.net/bug.php?id=72790 ExploitIssue Tracking
https://github.com/php/php-src/commit/0c8a2a2cd1056b7dc403eacb5d2c0eec6ce47c6f PatchVendor Advisory
https://github.com/php/php-src/commit/a14fdb9746262549bbbb96abb87338bacd147e1b?w=1 Issue TrackingPatch
https://security.gentoo.org/glsa/201611-22 Third Party Advisory
https://www.tenable.com/security/tns-2016-19 Third Party Advisory

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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-2016-7131), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.