CVE-2026-62946: ImageMagick: Integer Overflow in JNX decoder causes heap buffer over-write when processing extremly large files on 32-bit builds

July 24, 2026

When processing an extremely large JNX file on 32-bit platforms an integer overflow will happen that can cause a heap buffer over-write.

References

github.com/ImageMagick/ImageMagick/security/advisories/GHSA-h22j-f9xw-xjjm
github.com/advisories/GHSA-h22j-f9xw-xjjm
github.com/dlemstra/Magick.NET/releases/tag/14.15.0
nvd.nist.gov/vuln/detail/CVE-2026-62946

Code Behaviors & Features

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