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Fencer Vulns
low 3.3

CVE-2026-56362 json

ImageMagick - Heap-buffer-overflow Read in GetPixelIndex via OpenPixelCache Metadata Desynchronization

published 2026-02-25 8 mo ago modified 2026-10-29 10 d ago also EUVD-2026-42259 , GHSA-gq5v-qf8q-fp77 , GHSA-m366-rhm3-cx89 , JLSEC-2026-1043

cvss
3.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits
0
none known

Summary

ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex caused by OpenPixelCache updating image channel metadata before pixel cache memory allocation. Attackers can trigger memory and disk allocation failures to cause a heap-buffer-overflow read affecting any writer calling GetPixelIndex.

Patch / fix

  • nuget Magick.NET-Q16-AnyCPU 14.10.3
  • nuget Magick.NET-Q16-HDRI-AnyCPU 14.10.3
  • nuget Magick.NET-Q16-HDRI-OpenMP-arm64 14.10.3
  • nuget Magick.NET-Q16-HDRI-OpenMP-x64 14.10.3
  • nuget Magick.NET-Q16-HDRI-arm64 14.10.3
  • nuget Magick.NET-Q16-HDRI-x64 14.10.3
  • nuget Magick.NET-Q16-HDRI-x86 14.10.3
  • nuget Magick.NET-Q16-OpenMP-arm64 14.10.3
  • nuget Magick.NET-Q16-OpenMP-x64 14.10.3
  • nuget Magick.NET-Q16-OpenMP-x86 14.10.3
  • nuget Magick.NET-Q16-arm64 14.10.3
  • nuget Magick.NET-Q16-x64 14.10.3
  • nuget Magick.NET-Q16-x86 14.10.3
  • nuget Magick.NET-Q8-AnyCPU 14.10.3
  • nuget Magick.NET-Q8-OpenMP-arm64 14.10.3
  • nuget Magick.NET-Q8-OpenMP-x64 14.10.3
  • nuget Magick.NET-Q8-arm64 14.10.3
  • nuget Magick.NET-Q8-x64 14.10.3
  • nuget Magick.NET-Q8-x86 14.10.3
  • julia ImageMagick_jll 7.1.2023+0
  • ImageMagick ImageMagick 6.9.13-40, 7.1.2-15
  • imagemagick Debian 12 8:6.9.11.60+dfsg-1.6+deb12u8
  • imagemagick Debian 13 8:7.1.1.43+dfsg1-1+deb13u12
  • imagemagick Debian 14 8:7.1.2.15+dfsg1-1

debian advisories DEBIAN-CVE-2026-56362

  • ImageMagick SLE Module for Development Tools 15 SP7, SLE Module for Desktop Applications 15 SP7 7.1.1.43-150700.3.70.1
  • ImageMagick SLE Module for Desktop Applications 15 SP7 7.1.0.9-150400.6.101.1
  • ImageMagick SLES for SAP applications 16.0, SLES 16.0 7.1.2.0-160000.12.1
  • ImageMagick SLES for SAP 15 SP6, SLES 15 SP6-LTSS 7.1.1.21-150600.3.80.2
  • ImageMagick SLES LTSS Extended Security 12 SP5 6.8.8.1-71.264.1

suse advisories SUSE-SU-2026:3219-1SUSE-SU-2026:3194-1SUSE-SU-2026:3193-1SUSE-SU-2026:3192-1SUSE-SU-2026:22829-1

  • ImageMagick openSUSE Leap 16.0 7.1.2.0-160000.12.1
  • ImageMagick openSUSE Tumbleweed 7.1.2.27-1.1

opensuse advisories openSUSE-SU-2026:21391-1openSUSE-SU-2026:11228-1

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-2026-56362 updated cvss 3.3

ImageMagick: Magick.NET-Q16-AnyCPU: Magick.NET-Q16-HDRI-AnyCPU: Magick.NET-Q16-HDRI-OpenMP-arm64: Magick.NET-Q16-HDRI-OpenMP-x64: Magick.NET-Q16-HDRI-arm64: Magick.NET-Q16-HDRI-x64: Magick.NET-Q16-HDR

  • 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
4 mo ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 2.1 CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
CNA 3.1 3.3 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:L
GitHub 3.1 3.3 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:L
CNA 4.0 2.1 CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 4.2 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L
OSV 3.1 4.2 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L

Affected packages

ecosystem package affected fixed in
nuget Magick.NET-Q16-AnyCPU
<14.10.3
14.10.3
nuget Magick.NET-Q16-HDRI-AnyCPU
<14.10.3
14.10.3
nuget Magick.NET-Q16-HDRI-OpenMP-arm64
<14.10.3
14.10.3
nuget Magick.NET-Q16-HDRI-OpenMP-x64
<14.10.3
14.10.3
nuget Magick.NET-Q16-HDRI-arm64
<14.10.3
14.10.3
nuget Magick.NET-Q16-HDRI-x64
<14.10.3
14.10.3
nuget Magick.NET-Q16-HDRI-x86
<14.10.3
14.10.3
nuget Magick.NET-Q16-OpenMP-arm64
<14.10.3
14.10.3
nuget Magick.NET-Q16-OpenMP-x64
<14.10.3
14.10.3
nuget Magick.NET-Q16-OpenMP-x86
<14.10.3
14.10.3
nuget Magick.NET-Q16-arm64
<14.10.3
14.10.3
nuget Magick.NET-Q16-x64
<14.10.3
14.10.3
nuget Magick.NET-Q16-x86
<14.10.3
14.10.3
nuget Magick.NET-Q8-AnyCPU
<14.10.3
14.10.3
nuget Magick.NET-Q8-OpenMP-arm64
<14.10.3
14.10.3
nuget Magick.NET-Q8-OpenMP-x64
<14.10.3
14.10.3
nuget Magick.NET-Q8-arm64
<14.10.3
14.10.3
nuget Magick.NET-Q8-x64
<14.10.3
14.10.3
nuget Magick.NET-Q8-x86
<14.10.3
14.10.3
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.