CVE-2026-25794

ImageMagick is free and open-source software used for editing and manipulating digital images. `WriteUHDRImage` in `coders/uhdr.c` uses `int` arithmetic to compute the pixel buffer size. Prior to version 7.1.2-15, when image dimensions are large, the multiplication overflows 32-bit `int`, causing an undersized heap allocation followed by an out-of-bounds write. This can crash the process or potentially lead to an out of bounds heap write. Version 7.1.2-15 contains a patch.

• CWE-122
• CWE-190
• CWE-190

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-vhqj-f5cj-9x8hVendor Advisory
• https://access.redhat.com/security/cve/CVE-2026-25794
• https://bugzilla.redhat.com/show_bug.cgi?id=2442110
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25794.json

Published

Feb 24, 2026

Last Modified

Jul 15, 2026

Status

Modified

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