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Fencer Vulns
medium 5.1

CVE-2026-62946 json

ImageMagick: Integer Overflow in JNX decoder causes heap buffer over-write when processing extremly large files on 32-bit builds

published 2026-07-24 3 mo ago modified 2026-08-03 3 mo ago also EUVD-2026-50574 , GHSA-h22j-f9xw-xjjm , JLSEC-2026-1081

cvss
5.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions prior to both 6.9.13-52 and 7.1.2-27, processing an extremely large JNX file on 32-bit platforms can cause an integer overflow, leading to a heap buffer over-write. This issue has been fixed in versions 6.9.13-52 and 7.1.2-27.

Patch / fix

  • nuget Magick.NET-Q16-AnyCPU 14.15.0
  • nuget Magick.NET-Q16-HDRI-AnyCPU 14.15.0
  • nuget Magick.NET-Q16-HDRI-x86 14.15.0
  • nuget Magick.NET-Q16-x86 14.15.0
  • nuget Magick.NET-Q8-AnyCPU 14.15.0
  • nuget Magick.NET-Q8-x86 14.15.0
  • julia ImageMagick_jll 7.1.2029+0
  • imagemagick imagemagick 6.9.13-52, 7.1.2-27
  • imagemagick Debian 12 8:6.9.11.60+dfsg-1.6+deb12u14
  • imagemagick Debian 13 8:7.1.1.43+dfsg1-1+deb13u13
  • imagemagick Debian 14 8:7.1.2.27+dfsg1-1

debian advisories DEBIAN-CVE-2026-62946

  • imagemagick Ubuntu Pro 16.04 LTS 8:6.8.9.9-7ubuntu5.16+esm24
  • imagemagick Ubuntu Pro 18.04 LTS 8:6.9.7.4+dfsg-16ubuntu6.15+esm16
  • imagemagick Ubuntu Pro 20.04 LTS 8:6.9.10.23+dfsg-2.1ubuntu11.11+esm14
  • imagemagick Ubuntu Pro 22.04 LTS 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
  • imagemagick Ubuntu Pro 24.04 LTS 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
  • imagemagick Ubuntu Pro 26.04 LTS 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2

ubuntu advisories UBUNTU-CVE-2026-62946

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 applications 16.0, SLES 16.0 7.1.2.0-160000.14.1
  • ImageMagick SLE Module for Development Tools 15 SP7, SLE Module for Desktop Applications 15 SP7 7.1.1.43-150700.3.76.1
  • ImageMagick SLE Module for Desktop Applications 15 SP7 7.1.0.9-150400.6.107.1
  • ImageMagick SLES for SAP 15 SP6, SLES 15 SP6-LTSS 7.1.1.21-150600.3.87.1
  • ImageMagick SLES LTSS Extended Security 12 SP5 6.8.8.1-71.270.1

suse advisories SUSE-SU-2026:4376-1SUSE-SU-2026:23312-1SUSE-SU-2026:3414-1SUSE-SU-2026:3413-1SUSE-SU-2026:3412-1

  • ImageMagick openSUSE Leap 16.0 7.1.2.0-160000.14.1
  • ImageMagick openSUSE Tumbleweed 7.1.2.28-1.1

opensuse advisories openSUSE-SU-2026:21635-1openSUSE-SU-2026:11405-1

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-2026-62946 updated cvss 5.1

Imagemagick: ImageMagick: Denial of Service via integer overflow in JNX decoder on 32-bit systems

  • 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
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.12% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
OSV 3.1 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
nuget Magick.NET-Q16-AnyCPU
<14.15.0
14.15.0
nuget Magick.NET-Q16-HDRI-AnyCPU
<14.15.0
14.15.0
nuget Magick.NET-Q16-HDRI-x86
<14.15.0
14.15.0
nuget Magick.NET-Q16-x86
<14.15.0
14.15.0
nuget Magick.NET-Q8-AnyCPU
<14.15.0
14.15.0
nuget Magick.NET-Q8-x86
<14.15.0
14.15.0
julia ImageMagick_jll
<7.1.2029+0
7.1.2029+0

Affected products

  • ImageMagick ImageMagick

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

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.