Integer overflow in ImageMagick - CVE-2026-33900

Vulnerability identifier: #VU125879

CSH Severity: Medium

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

CVE-ID: CVE-2026-33900

CWE-ID: CWE-190

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

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

The vulnerability exists due to integer overflow or wraparound in the viff encoder when processing crafted input on 32-bit builds. A remote attacker can send a specially crafted file to trigger an out-of-bounds heap write and cause a denial of service.

Only 32-bit builds are vulnerable.

Install security update from vendor's website.

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-v67w-737x-v2c9