ImageMagick has heap use-after-free in the MSL encoder

MEDIUM 5.3CVE-2026-28688 · GHSA-xxw5-m53x-j38c · Published 10/03/2026 · updated 17/06/2026

In short

CVE-2026-28688 is a MEDIUM (CVSS 5.3) vulnerability affecting Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU, Magick.NET-Q16-HDRI-OpenMP-arm64.
Chance of exploitation in the next 30 days (EPSS): 0.20%, higher than 10.0% of all vulnerabilities.
Fix: update to 14.10.4, 7.1.2-16, 6.9.13-41 or later.

Package	Affected versions	Patched versions
Magick.NET-Q16-AnyCPU NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-HDRI-AnyCPU NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-HDRI-OpenMP-arm64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-HDRI-OpenMP-x64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-HDRI-arm64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-HDRI-x64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-HDRI-x86 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-OpenMP-arm64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-OpenMP-x64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-OpenMP-x86 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-arm64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-x64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q16-x86 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q8-AnyCPU NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q8-OpenMP-arm64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q8-OpenMP-x64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q8-arm64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q8-x64 NuGet	`< 14.10.4`	`14.10.4`
Magick.NET-Q8-x86 NuGet	`< 14.10.4`	`14.10.4`
imagemagick imagemagick	`≥ 7.0.0-0, < 7.1.2-16< 6.9.13-41`	`7.1.2-166.9.13-41`

Description

A heap-use-after-free vulnerability exists in the MSL encoder, where a cloned image is destroyed twice. The MSL coder does not support writing MSL so the write capability has been removed.

SUMMARY: AddressSanitizer: heap-use-after-free MagickCore/image.c:1195 in DestroyImage
Shadow bytes around the buggy address:
  0x0a4e80007450: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0a4e80007460: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0a4e80007470: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0a4e80007480: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0a4e80007490: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
=>0x0a4e800074a0: fd fd fd fd fd fd fd fd fd fd[fd]fd fd fd fd fd
  0x0a4e800074b0: fd fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa
  0x0a4e800074c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0a4e800074d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0a4e800074e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0a4e800074f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

NVD description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, a heap-use-after-free vulnerability exists in the MSL encoder, where a cloned image is destroyed twice. The MSL coder does not support writing MSL so the write capability has been removed. This vulnerability is fixed in 7.1.2-16 and 6.9.13-41.

References

ImageMagick/ImageMagick security advisory · WEB
nvd.nist.gov/vuln/detail/CVE-2026-28688 · ADVISORY
ImageMagick/ImageMagick · PACKAGE
dlemstra/Magick.NET release 14.10.4 · WEB

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Package

Affected versions

Patched versions

Magick.NET-Q16-AnyCPU

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-HDRI-AnyCPU

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-HDRI-OpenMP-arm64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-HDRI-OpenMP-x64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-HDRI-arm64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-HDRI-x64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-HDRI-x86

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-OpenMP-arm64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-OpenMP-x64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-OpenMP-x86

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-arm64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-x64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q16-x86

NuGet

< 14.10.4

14.10.4

Magick.NET-Q8-AnyCPU

NuGet

< 14.10.4

14.10.4

Magick.NET-Q8-OpenMP-arm64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q8-OpenMP-x64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q8-arm64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q8-x64

NuGet

< 14.10.4

14.10.4

Magick.NET-Q8-x86

NuGet

< 14.10.4

14.10.4

imagemagick

≥ 7.0.0-0, < 7.1.2-16< 6.9.13-41

7.1.2-166.9.13-41

Description

A heap-use-after-free vulnerability exists in the MSL encoder, where a cloned image is destroyed twice. The MSL coder does not support writing MSL so the write capability has been removed.

SUMMARY: AddressSanitizer: heap-use-after-free MagickCore/image.c:1195 in DestroyImage
Shadow bytes around the buggy address:
  0x0a4e80007450: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0a4e80007460: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0a4e80007470: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0a4e80007480: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0a4e80007490: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
=>0x0a4e800074a0: fd fd fd fd fd fd fd fd fd fd[fd]fd fd fd fd fd
  0x0a4e800074b0: fd fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa
  0x0a4e800074c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0a4e800074d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0a4e800074e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0a4e800074f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

NVD description

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