CVE-2025-55004 ImageMagick: heap-buffer overflow read in MNG magnification with alpha

What is CVE-2025-55004?

CVE-2025-55004 is a high-severity memory corruption vulnerability in Imagemagick Imagemagick, published on 13 Aug 2025. An attacker can exploit it over the internet without logging in, 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 7.1.2-1, ImageMagick is vulnerable to heap-buffer overflow read around the handling of images with separate alpha channels when performing image magnification in ReadOneMNGIMage. This can likely be used to leak subsequent memory contents into the output image. This issue has been patched in version 7.1.2-1.

Weakness: CWE-122

Which versions are affected by CVE-2025-55004?

36 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-2025-55004?

Upgrade Magick.NET-Q16-AnyCPU to 14.8.0 or later.

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

Is CVE-2025-55004 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55004 exists.

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 CLSA-2025-1762544876, CLSA-2026-1769187509, DEBIAN-CVE-2025-55004, GHSA-cjc8-g9w8-chfw, JLSEC-2026-919, MINI-gg5q-3v9p-668g and 1 more.