Heap-based buffer overflow in ImageMagick - CVE-2026-33899

Vulnerability identifier: #VU125884

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2026-33899

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

Affected software:
ImageMagick
Debian Linux
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
Desktop Applications Module
Development Tools Module
openSUSE Leap
openEuler
Anolis OS
libMagickWand-6_Q16-1-debuginfo
ImageMagick-config-6-upstream
ImageMagick-debugsource
libMagickCore-6_Q16-1-debuginfo
libMagickWand-6_Q16-1
libMagickCore-6_Q16-1
ImageMagick-devel
ImageMagick-debuginfo
ImageMagick-config-6-SUSE
libMagick++-devel
imagemagick (Debian package)
ImageMagick-help
ImageMagick-perl
ImageMagick-c++-devel
ImageMagick-c++
ImageMagick
perl-PerlMagick-debuginfo
perl-PerlMagick
libMagickWand-7_Q16HDRI10
libMagickWand-7_Q16HDRI10-debuginfo
ImageMagick-config-7-upstream
libMagickCore-7_Q16HDRI10
ImageMagick-doc
libMagick++-7_Q16HDRI5
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
libMagick++-devel-32bit
libMagick++-7_Q16HDRI5-debuginfo
ImageMagick-config-7-SUSE
libMagickCore-7_Q16HDRI10-debuginfo
ImageMagick-extra-debuginfo
ImageMagick-extra
libMagick++-7_Q16HDRI5-32bit-debuginfo
ImageMagick-devel-32bit
libMagickWand-7_Q16HDRI10-32bit-debuginfo
libMagickCore-7_Q16HDRI10-32bit
libMagickCore-7_Q16HDRI10-32bit-debuginfo
ImageMagick-config-7-upstream-secure
ImageMagick-config-7-upstream-limited
ImageMagick-config-7-upstream-websafe
ImageMagick-config-7-upstream-open
ImageMagick-djvu
ImageMagick-libs

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

The vulnerability exists due to heap-based buffer overflow in the XML parser when parsing XML files. A remote attacker can send a specially crafted XML file to cause a denial of service.

A single zero byte may be written out of bounds during XML parsing.

Install security update from vendor's website.

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-cr67-pvmx-2pp2