5.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2026-25637

CVE-2026-25637: ImageMagick: Possible memory leak in ASHLAR encoder

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-15, a memory leak in the ASHLAR image writer allows an attacker to exhaust process memory by providing a crafted image that results in small objects that are allocated but never freed. Version 7.1.2-15 contains a patch.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2026-25637

CVE-2026-25637:

5.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
Magick.NET-Q16-AnyCPU	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-AnyCPU	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-OpenMP-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-OpenMP-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-x86	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-OpenMP-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-OpenMP-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-OpenMP-x86	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-x86	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-AnyCPU	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-OpenMP-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-OpenMP-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-x86	nuget	< 14.10.3	14.10.3

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability is a memory leak in the ASHLAR image encoder in ImageMagick. The provided commit 30ce0e8efbd72fd6b50ed3a10ae22f57c8901137 directly addresses this issue. The patch modifies the coders/ashlar.c file, specifically within the ASHLARImage function. Before the patch, CloneDrawInfo was called to allocate a DrawInfo object, but there was no corresponding call to DestroyDrawInfo to free the allocated memory. This would cause a memory leak whenever an image with specific properties (a label) was processed. The fix involves two changes: moving the CloneDrawInfo call to be conditional on the presence of a label, and, more importantly, adding a call to DestroyDrawInfo after the DrawInfo object is used. Therefore, the ASHLARImage function is the vulnerable function, as it is the one that contained the memory leak.

Vulnerable functions

ASHLARImage

coders/ashlar.c

The function `ASHLARImage` in `coders/ashlar.c` was vulnerable to a memory leak. The `DrawInfo` object was cloned using `CloneDrawInfo` but was not subsequently destroyed. The patch fixes this by moving the allocation inside a conditional block and adding a call to `DestroyDrawInfo` to release the allocated memory, preventing the leak.

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WAF Protection Rules

WAF Rule

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Reasoning

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