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Fencer Vulns
medium 6.5

CVE-2026-23952 json

ImageMagick has a NULL pointer dereference in MSL parser via <comment> tag before image load

published 2026-01-21 9 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-3699 , GHSA-5vx3-wx4q-6cj8 , JLSEC-2026-937

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits
0
none known

Summary

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language) parser when processing <comment> tags before images are loaded. This can lead to DoS attack due to assertion failure (debug builds) or NULL pointer dereference (release builds). This issue is fixed in version 14.10.2.

Patch / fix

  • nuget Magick.NET-Q8-x64 14.10.2
  • nuget Magick.NET-Q8-arm64 14.10.2
  • nuget Magick.NET-Q8-x86 14.10.2
  • nuget Magick.NET-Q8-OpenMP-x64 14.10.2
  • nuget Magick.NET-Q8-OpenMP-arm64 14.10.2
  • nuget Magick.NET-Q16-x64 14.10.2
  • nuget Magick.NET-Q16-arm64 14.10.2
  • nuget Magick.NET-Q16-x86 14.10.2
  • nuget Magick.NET-Q16-OpenMP-x64 14.10.2
  • nuget Magick.NET-Q16-OpenMP-arm64 14.10.2
  • nuget Magick.NET-Q16-OpenMP-x86 14.10.2
  • nuget Magick.NET-Q16-HDRI-x64 14.10.2
  • nuget Magick.NET-Q16-HDRI-arm64 14.10.2
  • nuget Magick.NET-Q16-HDRI-x86 14.10.2
  • nuget Magick.NET-Q16-HDRI-OpenMP-x64 14.10.2
  • nuget Magick.NET-Q16-HDRI-OpenMP-arm64 14.10.2
  • nuget Magick.NET-Q8-AnyCPU 14.10.2
  • nuget Magick.NET-Q16-AnyCPU 14.10.2
  • nuget Magick.NET-Q16-HDRI-AnyCPU 14.10.2
  • julia ImageMagick_jll 7.1.2023+0
  • imagemagick imagemagick 6.9.13-38, 7.1.2-13
  • dlemstra magick.net 14.10.2
  • imagemagick Debian 12 8:6.9.11.60+dfsg-1.6+deb12u6
  • imagemagick Debian 13 8:7.1.1.43+dfsg1-1+deb13u5
  • imagemagick Debian 14 8:7.1.2.13+dfsg1-1

debian advisories DEBIAN-CVE-2026-23952

  • imagemagick Ubuntu Pro 14.04 LTS 8:6.7.7.10-6ubuntu3.13+esm20
  • imagemagick Ubuntu Pro 16.04 LTS 8:6.8.9.9-7ubuntu5.16+esm19
  • imagemagick Ubuntu Pro 18.04 LTS 8:6.9.7.4+dfsg-16ubuntu6.15+esm11
  • imagemagick Ubuntu Pro 20.04 LTS 8:6.9.10.23+dfsg-2.1ubuntu11.11+esm9
  • imagemagick Ubuntu Pro 22.04 LTS 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm9
  • imagemagick Ubuntu Pro 24.04 LTS 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm8

ubuntu advisories UBUNTU-CVE-2026-23952

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ImageMagick SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 7.1.0.9-150400.6.64.1
  • ImageMagick SLES for SAP 15 SP6, SLES 15 SP6-LTSS, openSUSE Leap 15.6 7.1.1.21-150600.3.38.1
  • ImageMagick SLE Module for Development Tools 15 SP7, SLE Module for Desktop Applications 15 SP7 7.1.1.43-150700.3.33.1
  • ImageMagick SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 6.8.8.1-71.227.1

suse advisories SUSE-SU-2026:0503-1SUSE-SU-2026:0438-1SUSE-SU-2026:0437-1SUSE-SU-2026:0384-1

  • ImageMagick openSUSE Leap 16.0 7.1.2.0-160000.6.1
  • ImageMagick openSUSE Tumbleweed 7.1.2.13-2.1

opensuse advisories openSUSE-SU-2026:20337-1openSUSE-SU-2026:10119-1

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-2026-23952 updated cvss 6.5

ImageMagick: ImageMagick: Denial of Service via processing of MSL comment tags

  • Red Hat Enterprise Linux 6 ImageMagick, ImageMagick-c++, ImageMagick-perl Red Hat Enterprise Linux 7 ImageMagick, ImageMagick-c++, ImageMagick-perl
    affected: workaround, no fix planned “Out of support scope”

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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-5vx3-wx4q-6cj8 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
nuget Magick.NET-Q8-x64
<14.10.2
14.10.2
nuget Magick.NET-Q8-arm64
<14.10.2
14.10.2
nuget Magick.NET-Q8-x86
<14.10.2
14.10.2
nuget Magick.NET-Q8-OpenMP-x64
<14.10.2
14.10.2
nuget Magick.NET-Q8-OpenMP-arm64
<14.10.2
14.10.2
nuget Magick.NET-Q16-x64
<14.10.2
14.10.2
nuget Magick.NET-Q16-arm64
<14.10.2
14.10.2
nuget Magick.NET-Q16-x86
<14.10.2
14.10.2
nuget Magick.NET-Q16-OpenMP-x64
<14.10.2
14.10.2
nuget Magick.NET-Q16-OpenMP-arm64
<14.10.2
14.10.2
nuget Magick.NET-Q16-OpenMP-x86
<14.10.2
14.10.2
nuget Magick.NET-Q16-HDRI-x64
<14.10.2
14.10.2
nuget Magick.NET-Q16-HDRI-arm64
<14.10.2
14.10.2
nuget Magick.NET-Q16-HDRI-x86
<14.10.2
14.10.2
nuget Magick.NET-Q16-HDRI-OpenMP-x64
<14.10.2
14.10.2
nuget Magick.NET-Q16-HDRI-OpenMP-arm64
<14.10.2
14.10.2
nuget Magick.NET-Q8-AnyCPU
<14.10.2
14.10.2
nuget Magick.NET-Q16-AnyCPU
<14.10.2
14.10.2
nuget Magick.NET-Q16-HDRI-AnyCPU
<14.10.2
14.10.2
julia ImageMagick_jll
<7.1.2023+0
7.1.2023+0

Affected products

  • ImageMagick ImageMagick

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.