CVE-2018-14553: canonical ubuntu_linux NULL Pointer Dereference
Vulnerability summary
CVE-2018-14553 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 3.44% chance of exploitation in the next 30 days, higher than 88.9% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 7Timeline
- 11-02-2020PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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 metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
3.44%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.44% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- libgd2< 2.1.0-5+deb8u14 | < 2.3.0-1
- debian_linuxEOL8.0
Ubuntu2 products
- doxygenAll versions (No fix recorded)
- libgd2< 2.1.0-3ubuntu0.11+esm1 | < 2.1.1-4ubuntu0.16.04.12 | < 2.2.5-4ubuntu0.4
Alpine1 product
- gd< 2.2.5-r3 | < 2.3.0-r0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 19.10
Fedoraproject1 product
- fedoraEOL32
Libgd1 product
- libgd≥ 2.1.1, ≤ 2.2.5 | 2.1.0 | 2.1.0:rc2
Mageia1 product
- libgd< 2.2.5-5.1.mga7
Opensuse1 product
- leapEOL15.1
8 vendors · 10 products
References
18 links
- lists.opensuse.org/opensuse-security-announce/2020-03/msg00020.htmlVendor AdvisoryThird Party Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory