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Vulnerability record · CVE-2016-9934 · published 4 January 2017

CVE-2016-9934: Php null pointer dereference vulnerability

Php · Php

ext/wddx/wddx.c in PHP before 5.6.28 and 7.x before 7.0.13 allows remote attackers to cause a denial of service (NULL pointer dereference) via crafted serialized data in a wddxPacket XML document, as demonstrated by a PDORow string.

7.5 CVSS 3.0 High EPSS 6.8% · top 6.2% CWE-476 · NULL pointer dereference
7.5CVSS 3.0 base score, v2 5.0
6.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

Description

ext/wddx/wddx.c in PHP before 5.6.28 and 7.x before 7.0.13 allows remote attackers to cause a denial of service (NULL pointer dereference) via crafted serialized data in a wddxPacket XML document, as demonstrated by a PDORow string.

CVSS:3.0/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://lists.opensuse.org/opensuse-updates/2016-12/msg00142.html
http://lists.opensuse.org/opensuse-updates/2017-01/msg00034.html
http://lists.opensuse.org/opensuse-updates/2017-01/msg00054.html
http://www.openwall.com/lists/oss-security/2016/12/12/2 Third Party Advisory
http://www.php.net/ChangeLog-5.php Release NotesVendor Advisory
http://www.php.net/ChangeLog-7.php Release NotesVendor Advisory
http://www.securityfocus.com/bid/94845
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=73331 Vendor Advisory
https://github.com/php/php-src/commit/6045de69c7dedcba3eadf7c4bba424b19c81d00d Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2016-12/msg00142.html
http://lists.opensuse.org/opensuse-updates/2017-01/msg00034.html
http://lists.opensuse.org/opensuse-updates/2017-01/msg00054.html
http://www.openwall.com/lists/oss-security/2016/12/12/2 Third Party Advisory
http://www.php.net/ChangeLog-5.php Release NotesVendor Advisory
http://www.php.net/ChangeLog-7.php Release NotesVendor Advisory
http://www.securityfocus.com/bid/94845
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=73331 Vendor Advisory
https://github.com/php/php-src/commit/6045de69c7dedcba3eadf7c4bba424b19c81d00d Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-9934), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.