What is CVE-2018-16640?

CVE-2018-16640 is a medium-severity vulnerability in Imagemagick, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 6.5/10. Published 2018-09-06.

How severe is CVE-2018-16640?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Imagemagick

CVE-2018-16640

ImageMagick 7.0.8-5 has a memory leak vulnerability in the function ReadOneJNGImage in coders/png.c.

Published 2018-09-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.025 (84.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000

Affected products

Imagemagick — versions 7.0.8-5
Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

github.com/ImageMagick/ImageMagick/issues/1201 (Third Party Advisory)
github.com/ImageMagick/ImageMagick/commit/76efa969342568841ecf320b5a041685a6d24… (Patch, Third Party Advisory)
usn.ubuntu.com/3785-1/ (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2018-16640?: CVE-2018-16640 is a medium-severity vulnerability in Imagemagick, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 6.5/10. Published 2018-09-06.
How severe is CVE-2018-16640?: Medium severity. CVSS v3 base score is 6.5 out of 10.