Out-of-bounds read in ImageMagick - CVE-2026-27798

Vulnerability identifier: #VU123225

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-27798

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in WaveletDenoise with small images. A local attacker can trigger an out-of-bounds read error and read contents of memory on the system.

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

Install updates from vendor's website.

ImageMagick - addressed in versions 6.9.13-40, 7.1.2-15
imagemagick (Ubuntu package) - addressed in versions 8:6.7.7.10-6ubuntu3.13+esm22, 8:6.8.9.9-7ubuntu5.16+esm21, 8:6.9.7.4+dfsg-16ubuntu6.15+esm13, 8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11, 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
imagemagick (Debian package) - addressed in versions 8:6.9.11.60+dfsg-1.6+deb12u7, 8:7.1.1.43+dfsg1-1+deb13u6
libMagickCore-7_Q16HDRI10-32bit - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagickCore-7_Q16HDRI10-64bit-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagick++-devel-32bit - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagickCore-7_Q16HDRI10-32bit-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagickWand-7_Q16HDRI10-32bit-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagickWand-7_Q16HDRI10-32bit - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagick++-7_Q16HDRI5-32bit-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
ImageMagick-devel-32bit - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagick++-7_Q16HDRI5-32bit - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
ImageMagick-doc - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
ImageMagick-devel-64bit - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagick++-7_Q16HDRI5-64bit-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagickCore-7_Q16HDRI10-64bit - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagick++-devel-64bit - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagickWand-7_Q16HDRI10-64bit - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagickWand-7_Q16HDRI10-64bit-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
libMagick++-7_Q16HDRI5-64bit - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
ImageMagick-extra-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
ImageMagick-config-7-upstream - update to 7.1.0.9-150400.6.68.2
ImageMagick-extra - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2
ImageMagick-debugsource - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
ImageMagick-devel - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
libMagick++-7_Q16HDRI5 - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
perl-PerlMagick - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
libMagick++-devel - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
libMagickCore-7_Q16HDRI10 - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
ImageMagick - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
ImageMagick-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
libMagickWand-7_Q16HDRI10 - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
perl-PerlMagick-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
libMagickWand-7_Q16HDRI10-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
ImageMagick-config-7-SUSE - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
libMagick++-7_Q16HDRI5-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
libMagickCore-7_Q16HDRI10-debuginfo - addressed in versions 7.1.0.9-150400.6.68.2, 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
ImageMagick-config-7-upstream-secure - addressed in versions 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
ImageMagick-config-7-upstream-open - addressed in versions 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
ImageMagick-config-7-upstream-websafe - addressed in versions 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
ImageMagick-config-7-upstream-limited - addressed in versions 7.1.1.21-150600.3.42.2, 7.1.1.43-150700.3.37.1
ImageMagick - update to 7.1.2.15-1
ImageMagick-help - update to 7.1.2.15-1
ImageMagick-perl - update to 7.1.2.15-1
ImageMagick-devel - update to 7.1.2.15-1
ImageMagick-debugsource - update to 7.1.2.15-1
ImageMagick-debuginfo - update to 7.1.2.15-1
ImageMagick-c++-devel - update to 7.1.2.15-1
ImageMagick-c++ - update to 7.1.2.15-1

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-qpgx-jfcq-r59f

• Multiple vulnerabilities in ImageMagick
• openEuler update for ImageMagick
• SUSE update for ImageMagick
• SUSE update for ImageMagick
• SUSE update for ImageMagick
• Debian update for imagemagick
• Debian update for imagemagick
• Ubuntu update for imagemagick