What is CVE-2017-18271?

CVE-2017-18271 is a medium-severity vulnerability in Imagemagick, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.5/10. Published 2018-05-18.

How severe is CVE-2017-18271?

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

Vulnerability in Imagemagick

CVE-2017-18271

In ImageMagick 7.0.7-16 Q16 x86_64 2017-12-22, an infinite loop vulnerability was found in the function ReadMIFFImage in coders/miff.c, which allows attackers to cause a denial of service (CPU exhaustion) via a crafted MIFF image file.

Published 2018-05-18 · 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: 0.022 (81.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: -0.000

Affected products

Imagemagick — versions 7.0.7-16
Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
Debian Linux — versions 7.0

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

lists.debian.org/debian-lts-announce/2018/05/msg00012.html (mailing-list, Third Party Advisory)
usn.ubuntu.com/3681-1/ (vendor-advisory, Third Party Advisory)
github.com/ImageMagick/ImageMagick/issues/911 (Third Party Advisory)
lists.debian.org/debian-lts-announce/2019/05/msg00015.html (mailing-list)
lists.debian.org/debian-lts-announce/2020/09/msg00007.html (mailing-list)

Frequently asked questions

What is CVE-2017-18271?: CVE-2017-18271 is a medium-severity vulnerability in Imagemagick, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.5/10. Published 2018-05-18.
How severe is CVE-2017-18271?: Medium severity. CVSS v3 base score is 6.5 out of 10.