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Fencer Intel
high 8.8

CVE-2018-9135 json

In ImageMagick 7.0.7-24 Q16, there is a heap-based buffer over-read in IsWEBPImageLossless in coders/webp.c.

published 2018-03-30 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20735

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

In ImageMagick 7.0.7-24 Q16, there is a heap-based buffer over-read in IsWEBPImageLossless in coders/webp.c.

Patch / fix

  • imagemagick Debian 14, Debian 13, Debian 12 8:6.9.10.8+dfsg-1

debian advisories DEBIAN-CVE-2018-9135

  • ImageMagick SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +2 more 6.8.8.1-71.54.5

suse advisories SUSE-SU-2018:1178-1

  • ImageMagick openSUSE Tumbleweed 7.1.0.8-1.2

opensuse advisories openSUSE-SU-2024:10597-1

  • imagemagick6 Alpine 3.16, Alpine 3.15, Alpine 3.14 +4 more 6.9.10.37-r0
  • imagemagick6 Alpine 3.9, Alpine 3.8, Alpine 3.7 6.9.10.39-r0

alpine advisories ALPINE-CVE-2018-9135

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2018-9135 updated cvss 3.3

ImageMagick: Heap-based buffer over-read in coders/webp.c:IsWEBPImageLossless()

  • Red Hat Enterprise Linux 8 ImageMagick
    affected: no fix planned “Will not fix”
  • 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

2.08% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/ImageMagick/ImageMagick/issues/1009 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Intel 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.