CVE-2026-48724
Received Received - Intake
Heap Buffer Overflow in ImageMagick via Floyd-Steinberg Dithering

Publication date: 2026-06-10

Last updated on: 2026-06-10

Assigner: GitHub, Inc.

Description
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-24, when using an image with mask the Floyd-Steinberg dithering method it will cause a negative heap buffer over-write. This issue has been patched in version 7.1.2-24.
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Meta Information
Published
2026-06-10
Last Modified
2026-06-10
Generated
2026-06-11
AI Q&A
2026-06-11
EPSS Evaluated
N/A
NVD
CVE-2026-48724
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
imagemagick imagemagick to 7.1.2-24 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability exists in ImageMagick, a free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-24, when an image with a mask uses the Floyd-Steinberg dithering method, it causes a negative heap buffer overwrite. This means that the software writes data outside the allocated memory bounds in a way that can corrupt memory.

Impact Analysis

The vulnerability can lead to a negative heap buffer overwrite, which may cause the application to crash or behave unpredictably. According to the CVSS score (5.5), the impact is primarily on availability (A:H), meaning it can cause denial of service or application instability. The attack requires local access with low privileges and user interaction.

Mitigation Strategies

To mitigate this vulnerability, you should update ImageMagick to version 7.1.2-24 or later, where the issue has been patched.

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