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Vulnerability record · CVE-2018-14553 · published 11 February 2020

CVE-2018-14553: Libgd null pointer dereference vulnerability

Libgd · Libgd

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).

7.5 CVSS 3.1 High EPSS 3.4% · top 10.9% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score, v2 4.3
3.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

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).

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

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00020.html Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1599032 Issue TrackingPermissions Required
https://github.com/libgd/libgd/commit/a93eac0e843148dc2d631c3ba80af17e9c8c860f PatchThird Party Advisory
https://github.com/libgd/libgd/pull/580 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00014.html Mailing ListThird 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/3CZ2QADQTKRHTGB2AHD7J4Q
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.html Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1599032 Issue TrackingPermissions Required
https://github.com/libgd/libgd/commit/a93eac0e843148dc2d631c3ba80af17e9c8c860f PatchThird Party Advisory
https://github.com/libgd/libgd/pull/580 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00014.html Mailing ListThird 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/3CZ2QADQTKRHTGB2AHD7J4Q
https://usn.ubuntu.com/4316-1/ Third Party Advisory
https://usn.ubuntu.com/4316-2/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-14553), CISA KEV, FIRST EPSS (scores of 2026-11-14). This page is refreshed as NVD updates the record.