CVE-2026-62343 ImageMagick: Heap Buffer Over-Write in morphology operation when an invalid kernel is provided

What is CVE-2026-62343?

CVE-2026-62343 is a medium-severity memory corruption vulnerability in Imagemagick Imagemagick, published on 29 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 is free and open-source software used for editing and manipulating digital images. In versions prior to 6.9.13-51 and 7.0.1-0 and above prior to 7.1.2-26, an invalid kernel can cause a heap buffer over-write when performing a morphology operation with a user supplied kernel. This issue has been fixed in versions 6.9.13-51 and 7.1.2-26.

Weakness: CWE-190

Which versions are affected by CVE-2026-62343?

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-2026-62343?

Upgrade Magick.NET-Q16-AnyCPU to 14.15.0 or later.

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

Is CVE-2026-62343 being exploited?

There is no known exploitation of CVE-2026-62343 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-2026-62343, ECHO-2628-e128-a8c1, GHSA-f5m7-cqgw-8hm7, JLSEC-2026-1079, MINI-3rcr-qp83-qw8m, OESA-2026-3126 and 2 more.