CVE-2026-48724 ImageMagick: Heap Buffer Underwrite in Floyd-Steinberg depth dithering

What is CVE-2026-48724?

CVE-2026-48724 is a medium-severity memory corruption vulnerability in Imagemagick Imagemagick, published on 10 Jun 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-24, when using an image with mask the Floyd-Steinberg dithering method it will cause a negative heap buffer over-write. This issue has been patched in version 7.1.2-24.

Weakness: CWE-787

Which versions are affected by CVE-2026-48724?

34 open source packages ship an affected version, including Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU and Magick.NET-Q16-HDRI-OpenMP-arm64. It affects 1 product.

Products include Imagemagick Imagemagick.

How do I fix CVE-2026-48724?

Upgrade Magick.NET-Q16-AnyCPU to 14.14.0 or later.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-48724 being exploited?

There is no known exploitation of CVE-2026-48724 in the wild and no public exploit code.

Other vulnerabilities in Imagemagick Imagemagick

• CVE-2019-19952 Use after free in n/a Critical 9.8
• CVE-2018-16328 Null dereference in n/a Critical 9.8
• CVE-2018-16329 Null dereference in n/a Critical 9.8
• CVE-2017-18210 Null dereference in n/a Critical 9.8
• CVE-2017-14138 Denial of service in n/a Critical 9.8

All Imagemagick Imagemagick vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-48724, ECHO-f52e-9e52-aaa7, GHSA-2hhq-c99x-492r, JLSEC-2026-1022, MINI-wf79-c88f-r872, UBUNTU-CVE-2026-48724.