CVE-2026-28687 ImageMagick has a Heap Use-After-Free in ImageMagick MSL decoder

What is CVE-2026-28687?

CVE-2026-28687 is a medium-severity use after free vulnerability in Imagemagick Imagemagick, published on 9 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, a heap use-after-free vulnerability in ImageMagick's MSL decoder allows an attacker to trigger access to freed memory by crafting an MSL file. This vulnerability is fixed in 7.1.2-16 and 6.9.13-41.

Weakness: CWE-416

Which versions are affected by CVE-2026-28687?

38 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-2026-28687?

Upgrade Magick.NET-Q16-AnyCPU to 14.10.4 or later.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-28687 being exploited?

There is no known exploitation of CVE-2026-28687 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-2026-28687, ECHO-ae77-5349-5c0f, GHSA-fpvf-frm6-625q, JLSEC-2026-975, MINI-vwhm-hgqg-ccf5, UBUNTU-CVE-2026-28687.