Heap-based buffer overflow in ImageMagick - CVE-2026-40169

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Main Vulnerability Database Vulnerabilities #VU125870

Heap-based buffer overflow in ImageMagick - CVE-2026-40169

Published: April 14, 2026 / Updated: May 16, 2026


Vulnerability identifier: #VU125870
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-40169
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to heap-based buffer overflow in the YAML and JSON encoders when writing yaml or json output. A remote attacker can process a crafted image to cause a denial of service.


Affected software

ImageMagick
Debian Linux
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
Desktop Applications Module
Development Tools Module
openSUSE Leap
openEuler
Anolis OS
libMagick++-7_Q16HDRI5-debuginfo
libMagickCore-7_Q16HDRI10-32bit
libMagickWand-7_Q16HDRI10-32bit-debuginfo
ImageMagick-devel-32bit
libMagick++-7_Q16HDRI5-32bit-debuginfo
ImageMagick-extra
ImageMagick-extra-debuginfo
libMagickCore-7_Q16HDRI10-debuginfo
ImageMagick-config-7-SUSE
libMagick++-7_Q16HDRI5
ImageMagick-config-7-upstream
ImageMagick-debugsource
libMagick++-devel
perl-PerlMagick-debuginfo
ImageMagick-devel
perl-PerlMagick
libMagickWand-7_Q16HDRI10
ImageMagick-debuginfo
ImageMagick
libMagickWand-7_Q16HDRI10-debuginfo
libMagickCore-7_Q16HDRI10-32bit-debuginfo
libMagickCore-7_Q16HDRI10
ImageMagick-doc
ImageMagick-devel-64bit
libMagick++-devel-64bit
libMagickWand-7_Q16HDRI10-64bit-debuginfo
libMagickCore-7_Q16HDRI10-64bit-debuginfo
libMagick++-7_Q16HDRI5-64bit
libMagickCore-7_Q16HDRI10-64bit
libMagick++-7_Q16HDRI5-64bit-debuginfo
libMagick++-7_Q16HDRI5-32bit
libMagickWand-7_Q16HDRI10-32bit
libMagickWand-7_Q16HDRI10-64bit
libMagick++-devel-32bit
ImageMagick-config-7-upstream-secure
ImageMagick-config-7-upstream-limited
ImageMagick-config-7-upstream-websafe
ImageMagick-config-7-upstream-open
imagemagick (Debian package)
ImageMagick-djvu
ImageMagick-c++-devel
ImageMagick-c++
ImageMagick-perl
ImageMagick-libs
ImageMagick-help

How to mitigate CVE-2026-40169

Install security update from vendor's website.

ImageMagick - addressed in versions 6.9.13-47, 7.1.2-22
libMagick++-7_Q16HDRI5-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
libMagickCore-7_Q16HDRI10-32bit - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagickWand-7_Q16HDRI10-32bit-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
ImageMagick-devel-32bit - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagick++-7_Q16HDRI5-32bit-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
ImageMagick-extra - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
ImageMagick-extra-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagickCore-7_Q16HDRI10-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
ImageMagick-config-7-SUSE - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
libMagick++-7_Q16HDRI5 - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
ImageMagick-config-7-upstream - update to 7.1.0.9-150400.6.87.1
ImageMagick-debugsource - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
libMagick++-devel - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
perl-PerlMagick-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
ImageMagick-devel - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
perl-PerlMagick - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
libMagickWand-7_Q16HDRI10 - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
ImageMagick-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
ImageMagick - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
libMagickWand-7_Q16HDRI10-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
libMagickCore-7_Q16HDRI10-32bit-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagickCore-7_Q16HDRI10 - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
ImageMagick-doc - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
ImageMagick-devel-64bit - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagick++-devel-64bit - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagickWand-7_Q16HDRI10-64bit-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagickCore-7_Q16HDRI10-64bit-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagick++-7_Q16HDRI5-64bit - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagickCore-7_Q16HDRI10-64bit - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagick++-7_Q16HDRI5-64bit-debuginfo - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagick++-7_Q16HDRI5-32bit - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagickWand-7_Q16HDRI10-32bit - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagickWand-7_Q16HDRI10-64bit - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
libMagick++-devel-32bit - addressed in versions 7.1.0.9-150400.6.87.1, 7.1.1.21-150600.3.55.1
ImageMagick-config-7-upstream-secure - addressed in versions 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
ImageMagick-config-7-upstream-limited - addressed in versions 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
ImageMagick-config-7-upstream-websafe - addressed in versions 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
ImageMagick-config-7-upstream-open - addressed in versions 7.1.1.21-150600.3.55.1, 7.1.1.43-150700.3.47.1
imagemagick (Debian package) - update to 8:7.1.1.43+dfsg1-1+deb13u8
ImageMagick-djvu - update to 7.1.2.15-12
ImageMagick-devel - update to 7.1.2.15-12
ImageMagick-c++-devel - update to 7.1.2.15-12
ImageMagick-c++ - update to 7.1.2.15-12
ImageMagick - update to 7.1.2.15-12
ImageMagick-perl - update to 7.1.2.15-12
ImageMagick-doc - update to 7.1.2.15-12
ImageMagick-libs - update to 7.1.2.15-12
ImageMagick-c++ - update to 7.1.2.19-1
ImageMagick-c++-devel - update to 7.1.2.19-1
ImageMagick - update to 7.1.2.19-1
ImageMagick-help - update to 7.1.2.19-1
ImageMagick-perl - update to 7.1.2.19-1
ImageMagick-devel - update to 7.1.2.19-1
ImageMagick-debugsource - update to 7.1.2.19-1
ImageMagick-debuginfo - update to 7.1.2.19-1

External References

Related Security Bulletins