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CVE-2026-25794

ImageMagick has heap-buffer-overflow via signed integer overflow in `WriteUHDRImage` when writing UHDR images with large dimensions PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
ImageMagick / ImageMagickaffected < 7.1.2-15

CWE

CWE-122, CWE-190

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in ImageMagick. When processing images with large dimensions, the `WriteUHDRImage` function in `coders/uhdr.c` uses integer arithmetic that can overflow. This overflow leads to an undersized memory allocation, followed by an out-of-bounds write. A remote attacker could exploit this vulnerability by providing a specially crafted image, potentially causing a denial of service or, in some cases, arbitrary code execution.