CVE-2026-62946

MEDIUM5.1

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

Published Jul 30, 2026

Modified 6 days ago

Fix available

Details

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.

Affected Packages

ImageMagick

Windows 10 (1507)Windows 10 (1607) / Server 2016Windows 10 (1703)Windows 10 (1709)Windows 10 (1803)

Fixed in:

6.9.13.527.1.2.27

References

WEB

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

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-62946

CVSS Analysis

CVSS v3.1