Out-of-bounds write in ImageMagick - CVE-2026-46521

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Main Vulnerability Database Vulnerabilities #VU131622

Out-of-bounds write in ImageMagick - CVE-2026-46521

Published: May 18, 2026


Vulnerability identifier: #VU131622
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-46521
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error in MIFF encoder when using LZMA compression. A remote attacker can trigger an out-of-bounds write and perform a denial of service (DoS) attack on the system.


Affected software

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

How to mitigate CVE-2026-46521

Install updates from vendor's website.

ImageMagick - addressed in versions 6.9.13-48, 7.1.2-23
imagemagick (Debian package) - addressed in versions 8:6.9.11.60+dfsg-1.6+deb12u10, 8:7.1.1.43+dfsg1-1+deb13u9
ImageMagick-help - addressed in versions 6.9.13.48-1, 7.1.2.23-1
ImageMagick-perl - addressed in versions 6.9.13.48-1, 7.1.2.23-1
ImageMagick-devel - addressed in versions 6.9.13.48-1, 7.1.2.23-1
ImageMagick-debugsource - addressed in versions 6.9.13.48-1, 7.1.2.23-1
ImageMagick-debuginfo - addressed in versions 6.9.13.48-1, 7.1.2.23-1
ImageMagick-c++-devel - addressed in versions 6.9.13.48-1, 7.1.2.23-1
ImageMagick-c++ - addressed in versions 6.9.13.48-1, 7.1.2.23-1
ImageMagick - addressed in versions 6.9.13.48-1, 7.1.2.23-1
libMagick++-7_Q16HDRI5 - update to 7.1.0.9-150400.6.87.1
ImageMagick-extra - update to 7.1.0.9-150400.6.87.1
ImageMagick-extra-debuginfo - update to 7.1.0.9-150400.6.87.1
libMagickCore-7_Q16HDRI10-debuginfo - update to 7.1.0.9-150400.6.87.1
ImageMagick-config-7-SUSE - update to 7.1.0.9-150400.6.87.1
libMagickWand-7_Q16HDRI10-debuginfo - update to 7.1.0.9-150400.6.87.1
libMagick++-7_Q16HDRI5-debuginfo - update to 7.1.0.9-150400.6.87.1
ImageMagick-debugsource - update to 7.1.0.9-150400.6.87.1
libMagick++-devel - update to 7.1.0.9-150400.6.87.1
perl-PerlMagick-debuginfo - update to 7.1.0.9-150400.6.87.1
ImageMagick-devel - update to 7.1.0.9-150400.6.87.1
perl-PerlMagick - update to 7.1.0.9-150400.6.87.1
libMagickWand-7_Q16HDRI10 - update to 7.1.0.9-150400.6.87.1
ImageMagick-debuginfo - update to 7.1.0.9-150400.6.87.1
ImageMagick - update to 7.1.0.9-150400.6.87.1
libMagickCore-7_Q16HDRI10 - update to 7.1.0.9-150400.6.87.1
ImageMagick-config-7-upstream - update to 7.1.0.9-150400.6.87.1
ImageMagick-devel-32bit - update to 7.1.0.9-150400.6.87.1
ImageMagick-doc - update to 7.1.0.9-150400.6.87.1
ImageMagick-devel-64bit - update to 7.1.0.9-150400.6.87.1
libMagick++-devel-64bit - update to 7.1.0.9-150400.6.87.1
libMagickWand-7_Q16HDRI10-64bit-debuginfo - update to 7.1.0.9-150400.6.87.1
libMagickCore-7_Q16HDRI10-64bit-debuginfo - update to 7.1.0.9-150400.6.87.1
libMagickWand-7_Q16HDRI10-64bit - update to 7.1.0.9-150400.6.87.1
libMagick++-7_Q16HDRI5-64bit - update to 7.1.0.9-150400.6.87.1
libMagickCore-7_Q16HDRI10-64bit - update to 7.1.0.9-150400.6.87.1
libMagick++-7_Q16HDRI5-64bit-debuginfo - update to 7.1.0.9-150400.6.87.1
libMagick++-7_Q16HDRI5-32bit - update to 7.1.0.9-150400.6.87.1
libMagickWand-7_Q16HDRI10-32bit - update to 7.1.0.9-150400.6.87.1
libMagickCore-7_Q16HDRI10-32bit-debuginfo - update to 7.1.0.9-150400.6.87.1
libMagick++-devel-32bit - update to 7.1.0.9-150400.6.87.1
libMagickCore-7_Q16HDRI10-32bit - update to 7.1.0.9-150400.6.87.1
libMagickWand-7_Q16HDRI10-32bit-debuginfo - update to 7.1.0.9-150400.6.87.1
libMagick++-7_Q16HDRI5-32bit-debuginfo - update to 7.1.0.9-150400.6.87.1

External References

Related Security Bulletins