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Fencer Vulns
medium 6.5

CVE-2018-18023 json

In ImageMagick 7.0.8-13 Q16, there is a heap-based buffer over-read in the SVGStripString function of coders/svg.c, which allows attackers…

published 2018-10-07 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-9762

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

In ImageMagick 7.0.8-13 Q16, there is a heap-based buffer over-read in the SVGStripString function of coders/svg.c, which allows attackers to cause a denial of service via a crafted SVG image file.

Patch / fix

  • imagemagick Debian 14, Debian 13, Debian 12 8:6.9.10.14+dfsg-1

debian advisories DEBIAN-CVE-2018-18023

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-18023 updated cvss 3.3

ImageMagick: heap-based buffer over-read in the SVGStripString function of coders/svg.c

  • Red Hat Enterprise Linux 5 ImageMagick Red Hat Enterprise Linux 6 ImageMagick, ImageMagick-c++, ImageMagick-perl Red Hat Enterprise Linux 7 ImageMagick, ImageMagick-c++, ImageMagick-perl
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.48% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/ImageMagick/ImageMagick/issues/1336 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.