CVE-2016-7126

Name: CVE-2016-7126
Creator: NVD / NIST
Published: 2016-09-12T01:59:04.723+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 8.82%

Last modified Jun 17, 2026

CVE-2016-7126 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The imagetruecolortopalette function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate the number of colors, which allows remote attackers to cause a denial of service (select_colors allocation error and out-of-bounds write) or possibly have unspecified other impact via a large value in the third argument.. EPSS estimates a 8.82% chance of exploitation in the next 30 days.

Description

The imagetruecolortopalette function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate the number of colors, which allows remote attackers to cause a denial of service (select_colors allocation error and out-of-bounds write) or possibly have unspecified other impact via a large value in the third argument.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

8.82%

94.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Php	Php	7.0.0
Php	Php	7.0.1
Php	Php	7.0.2
Php	Php	7.0.3
Php	Php	7.0.4
Php	Php	7.0.5
Php	Php	7.0.6
Php	Php	7.0.7
Php	Php	7.0.8
Php	Php	7.0.9
Php	Php	<= 5.6.24

References

http://openwall.com/lists/oss-security/2016/09/02/9Mailing List
http://rhn.redhat.com/errata/RHSA-2016-2750.htmlThird Party Advisory
http://www.php.net/ChangeLog-5.phpRelease Notes
http://www.php.net/ChangeLog-7.phpRelease Notes
http://www.securityfocus.com/bid/92755Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036680Third Party Advisory, VDB Entry
https://bugs.php.net/bug.php?id=72697Exploit, Issue Tracking
https://github.com/php/php-src/commit/28022c9b1fd937436ab67bb3d61f652c108baf96Patch, Vendor Advisory
https://github.com/php/php-src/commit/b6f13a5ef9d6280cf984826a5de012a32c396cd4?w=1Issue Tracking, Patch
https://security.gentoo.org/glsa/201611-22Third Party Advisory
https://www.tenable.com/security/tns-2016-19Third Party Advisory
http://openwall.com/lists/oss-security/2016/09/02/9Mailing List
http://rhn.redhat.com/errata/RHSA-2016-2750.htmlThird Party Advisory
http://www.php.net/ChangeLog-5.phpRelease Notes
http://www.php.net/ChangeLog-7.phpRelease Notes
http://www.securityfocus.com/bid/92755Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036680Third Party Advisory, VDB Entry
https://bugs.php.net/bug.php?id=72697Exploit, Issue Tracking
https://github.com/php/php-src/commit/28022c9b1fd937436ab67bb3d61f652c108baf96Patch, Vendor Advisory
https://github.com/php/php-src/commit/b6f13a5ef9d6280cf984826a5de012a32c396cd4?w=1Issue Tracking, Patch
https://security.gentoo.org/glsa/201611-22Third Party Advisory
https://www.tenable.com/security/tns-2016-19Third Party Advisory

Timeline

Published: Sep 12, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-7126?

How severe is CVE-2016-7126?

CVE-2016-7126 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 8.82% probability of exploitation in the next 30 days.

How do I fix CVE-2016-7126?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-7126?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST