CVE-2026-62946

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

State: Published
Severity: 5.1 Medium
Published: Jul 30, 2026
Updated: Jul 30, 2026
Reserved: Jul 14, 2026

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Description

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions prior to both 6.9.13-52 and 7.1.2-27, processing an extremely large JNX file on 32-bit platforms can cause an integer overflow, leading to a heap buffer over-write. This issue has been fixed in versions 6.9.13-52 and 7.1.2-27.

Scores

CVSS	Score	Vector	Source
3.1	5.1 Medium	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
ImageMagickImageMagick	< 7.1.2-27Affected < 6.9.13-52Affected

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-h22j-f9xw-xjjm

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