CVE-2026-56372 ImageMagick - Heap Buffer Overflow Read via Unrecognized Magnify Method

What is CVE-2026-56372?

CVE-2026-56372 is a medium-severity memory corruption vulnerability in Imagemagick Imagemagick, published on 11 Jul 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 before 7.1.2-19 contains a heap buffer overflow vulnerability in the magnify operation that allows attackers to read out of bounds memory. An unrecognized magnify:method value triggers an out of bounds read, potentially exposing sensitive information or causing denial of service.

Weakness: CWE-122

Which versions are affected by CVE-2026-56372?

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-2026-56372?

Upgrade Magick.NET-Q16-AnyCPU to 14.12.0 or later.

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

Is CVE-2026-56372 being exploited?

There is no known exploitation of CVE-2026-56372 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
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-56372, ECHO-5b7b-7765-6253, GHSA-8vfj-q2cp-5m5j, GHSA-x98x-mp75-v6m4, JLSEC-2026-1053, MINI-9w9c-3gfx-3h62 and 2 more.