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Vulnerability record · CVE-2016-7412 · published 17 September 2016

CVE-2016-7412: Php memory buffer overflow vulnerability

Php · Php

ext/mysqlnd/mysqlnd_wireprotocol.c in PHP before 5.6.26 and 7.x before 7.0.11 does not verify that a BIT field has the UNSIGNED_FLAG flag, which allows remote MySQL servers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted field metadata.

8.1 CVSS 3.0 High EPSS 8.9% · top 5.0% CWE-119 · Memory buffer overflow
8.1CVSS 3.0 base score, v2 6.8
8.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
20References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

ext/mysqlnd/mysqlnd_wireprotocol.c in PHP before 5.6.26 and 7.x before 7.0.11 does not verify that a BIT field has the UNSIGNED_FLAG flag, which allows remote MySQL servers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted field metadata.

CVSS:3.0/AV:N/AC:H/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://www.openwall.com/lists/oss-security/2016/09/15/10 Mailing List
http://www.php.net/ChangeLog-5.php Release Notes
http://www.php.net/ChangeLog-7.php Release Notes
http://www.securityfocus.com/bid/93005
http://www.securitytracker.com/id/1036836
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=72293 ExploitIssue Tracking
https://github.com/php/php-src/commit/28f80baf3c53e267c9ce46a2a0fadbb981585132?w=1 Issue TrackingPatch
https://security.gentoo.org/glsa/201611-22
https://www.tenable.com/security/tns-2016-19
http://www.openwall.com/lists/oss-security/2016/09/15/10 Mailing List
http://www.php.net/ChangeLog-5.php Release Notes
http://www.php.net/ChangeLog-7.php Release Notes
http://www.securityfocus.com/bid/93005
http://www.securitytracker.com/id/1036836
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=72293 ExploitIssue Tracking
https://github.com/php/php-src/commit/28f80baf3c53e267c9ce46a2a0fadbb981585132?w=1 Issue TrackingPatch
https://security.gentoo.org/glsa/201611-22
https://www.tenable.com/security/tns-2016-19

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-7412), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.