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Vulnerability record · CVE-2026-25794 · published 24 February 2026

CVE-2026-25794: Imagemagick heap-based buffer overflow vulnerability

Imagemagick · Imagemagick

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.

8.2 CVSS 3.1 High EPSS 0.59% · top 53.9% CWE-122 · Heap-based buffer overflowCWE-190 · Integer overflow
8.2CVSS 3.1 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
15 Jul 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-vhqj-f5cj-9x8h Vendor 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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-25794), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.