CVE-2018-14553

Name: CVE-2018-14553
Creator: NVD / NIST
Published: 2020-02-11T13:15:11.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.41%

Last modified Jun 17, 2026

CVE-2018-14553 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. gdImageClone in gd.c in libgd 2.1.0-rc2 through 2.2.5 has a NULL pointer dereference allowing attackers to crash an application via a specific function call sequence. Only affects PHP when linked with an external libgd (not bundled).. EPSS estimates a 3.41% chance of exploitation in the next 30 days.

Description

gdImageClone in gd.c in libgd 2.1.0-rc2 through 2.2.5 has a NULL pointer dereference allowing attackers to crash an application via a specific function call sequence. Only affects PHP when linked with an external libgd (not bundled).

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

3.41%

87.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Libgd	Libgd	>= 2.1.1, <= 2.2.5
Libgd	Libgd	2.1.0
Fedoraproject	Fedora	32
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.10
Debian	Debian Linux	8.0
Opensuse	Leap	15.1

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00020.htmlThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1599032Issue Tracking, Permissions Required
https://github.com/libgd/libgd/commit/a93eac0e843148dc2d631c3ba80af17e9c8c860fPatch, Third Party Advisory
https://github.com/libgd/libgd/pull/580Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00014.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00003.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3CZ2QADQTKRHTGB2AHD7J4QQNDLBEMM6/
https://usn.ubuntu.com/4316-1/Third Party Advisory
https://usn.ubuntu.com/4316-2/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00020.htmlThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1599032Issue Tracking, Permissions Required
https://github.com/libgd/libgd/commit/a93eac0e843148dc2d631c3ba80af17e9c8c860fPatch, Third Party Advisory
https://github.com/libgd/libgd/pull/580Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00014.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00003.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3CZ2QADQTKRHTGB2AHD7J4QQNDLBEMM6/
https://usn.ubuntu.com/4316-1/Third Party Advisory
https://usn.ubuntu.com/4316-2/Third Party Advisory

Timeline

Published: Feb 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-14553?

How severe is CVE-2018-14553?

CVE-2018-14553 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.41% probability of exploitation in the next 30 days.

How do I fix CVE-2018-14553?

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-2018-14553?

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

Scan your code now

Source: NVD / NIST