Out-of-bounds write in ImageMagick - CVE-2026-48724

Vulnerability identifier: #VU133106

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-2026-48724

CWE-ID: CWE-787

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The vulnerability exists due to out-of-bounds write in the Floyd-Steinberg depth dithering functionality when processing a crafted image with a mask. A remote attacker can trick the victim into opening a crafted image to cause a denial of service.

User interaction is required to open or process a crafted image.

ImageMagick
Debian Linux
openEuler
Anolis OS
ImageMagick-c++
ImageMagick-c++-devel
ImageMagick-debuginfo
ImageMagick-debugsource
ImageMagick-devel
ImageMagick-perl
ImageMagick-help
ImageMagick
imagemagick (Debian package)
ImageMagick-djvu
ImageMagick-doc
ImageMagick-libs

Install security update from vendor's website.

ImageMagick - update to 7.1.2-24
ImageMagick-c++ - update to 6.9.13.49-1
ImageMagick-c++-devel - update to 6.9.13.49-1
ImageMagick-debuginfo - update to 6.9.13.49-1
ImageMagick-debugsource - update to 6.9.13.49-1
ImageMagick-devel - update to 6.9.13.49-1
ImageMagick-perl - update to 6.9.13.49-1
ImageMagick-help - update to 6.9.13.49-1
ImageMagick - update to 6.9.13.49-1
imagemagick (Debian package) - update to 8:7.1.1.43+dfsg1-1+deb13u10
ImageMagick - update to 7.1.2.15-12
ImageMagick-c++ - update to 7.1.2.15-12
ImageMagick-c++-devel - update to 7.1.2.15-12
ImageMagick-devel - update to 7.1.2.15-12
ImageMagick-djvu - 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-perl - update to 7.1.2.15-12

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-2hhq-c99x-492r

• Multiple vulnerabilities in ImageMagick
• openEuler update for ImageMagick
• Debian update for imagemagick
• Anolis OS update for ImageMagick