CVE-2016-6128

Name: CVE-2016-6128
Creator: NVD / NIST
Published: 2016-08-07T10:59:22.65+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 6.68%

Last modified Jun 17, 2026

CVE-2016-6128 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The gdImageCropThreshold function in gd_crop.c in the GD Graphics Library (aka libgd) before 2.2.3, as used in PHP before 7.0.9, allows remote attackers to cause a denial of service (application crash) via an invalid color index.. EPSS estimates a 6.68% chance of exploitation in the next 30 days.

Description

The gdImageCropThreshold function in gd_crop.c in the GD Graphics Library (aka libgd) before 2.2.3, as used in PHP before 7.0.9, allows remote attackers to cause a denial of service (application crash) via an invalid color index.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

6.68%

93.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Debian	Debian Linux	8.0
Opensuse	Leap	42.1
Libgd	Libgd	<= 2.2.2
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	15.10
Canonical	Ubuntu Linux	16.04

References

http://lists.opensuse.org/opensuse-updates/2016-08/msg00086.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-09/msg00078.htmlMailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2750.htmlThird Party Advisory
http://www.debian.org/security/2016/dsa-3619Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/06/30/1Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/91509Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036276Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-3030-1Third Party Advisory
https://bugs.php.net/72494Issue Tracking, Permissions Required
https://github.com/libgd/libgd/commit/1ccfe21e14c4d18336f9da8515cd17db88c3de61Issue Tracking, Patch, Third Party Advisory
https://github.com/libgd/libgd/commit/6ff72ae40c7c20ece939afb362d98cc37f4a1c96Issue Tracking, Third Party Advisory
https://libgd.github.io/release-2.2.3.htmlRelease Notes, Third Party Advisory
https://security.gentoo.org/glsa/201612-09Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-08/msg00086.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-09/msg00078.htmlMailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2750.htmlThird Party Advisory
http://www.debian.org/security/2016/dsa-3619Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/06/30/1Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/91509Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036276Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-3030-1Third Party Advisory
https://bugs.php.net/72494Issue Tracking, Permissions Required
https://github.com/libgd/libgd/commit/1ccfe21e14c4d18336f9da8515cd17db88c3de61Issue Tracking, Patch, Third Party Advisory
https://github.com/libgd/libgd/commit/6ff72ae40c7c20ece939afb362d98cc37f4a1c96Issue Tracking, Third Party Advisory
https://libgd.github.io/release-2.2.3.htmlRelease Notes, Third Party Advisory
https://security.gentoo.org/glsa/201612-09Third Party Advisory

Timeline

Published: Aug 7, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-6128?

How severe is CVE-2016-6128?

CVE-2016-6128 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 6.68% probability of exploitation in the next 30 days.

How do I fix CVE-2016-6128?

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-2016-6128?

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

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Source: NVD / NIST