CVE-2026-49218: ImageMagick denial of service in DCM decoder

CVE-2026-49218 · Severity: high · CVSS 7.5 · Published 2026-06-10

ImageMagick is a widely used software suite for displaying, converting, and editing image files. A vulnerability in its DICOM (DCM) image decoder allows for the creation of images with invalid dimensions, which can bypass security policies and cause application crashes. This could lead to a denial-of-service, impacting the availability of services that process user-uploaded medical or technical images.

Technologies: Magick.NET-Q16-AnyCPU (NuGet), Magick.NET-Q16-arm64 (NuGet), Magick.NET-Q16-HDRI-AnyCPU (NuGet), Magick.NET-Q16-HDRI-arm64 (NuGet), Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet), Magick.NET-Q16-HDRI-x64 (NuGet), Magick.NET-Q16-HDRI-x86 (NuGet), Magick.NET-Q16-OpenMP-arm64 (NuGet), Magick.NET-Q16-OpenMP-x64 (NuGet), Magick.NET-Q16-x64 (NuGet), Magick.NET-Q16-x86 (NuGet), Magick.NET-Q8-AnyCPU (NuGet), Magick.NET-Q8-arm64 (NuGet), Magick.NET-Q8-OpenMP-arm64 (NuGet), Magick.NET-Q8-OpenMP-x64 (NuGet), Magick.NET-Q8-x64 (NuGet), Magick.NET-Q8-x86 (NuGet). Vendors: NuGet.

Quick answers

Is CVE-2026-49218 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-49218 being exploited in the wild.
How severe is CVE-2026-49218?
High severity, with a CVSS score of 7.5, published 10 June 2026.
Which products and versions are affected?
Magick.NET-Q16-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.14.0; Magick.NET-Q16-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.14.0; Magick.NET-Q16-HDRI-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.14.0; Magick.NET-Q16-HDRI-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.14.0; and 13 more.
Is there a fix for CVE-2026-49218?
Yes. Magick.NET-Q16-AnyCPU (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q16-arm64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q16-x64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q16-x86 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q8-arm64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q8-x64 (NuGet): upgrade to 14.14.0 or later; Magick.NET-Q8-x86 (NuGet): upgrade to 14.14.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-49218 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-49218?
Check whether you run Magick.NET-Q16-AnyCPU (NuGet), Magick.NET-Q16-arm64 (NuGet), Magick.NET-Q16-HDRI-AnyCPU (NuGet) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Magick.NET-Q16-AnyCPU (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-AnyCPU --version 14.14.0
  • Magick.NET-Q16-arm64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-arm64 --version 14.14.0
  • Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.14.0
  • Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.14.0
  • Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.14.0
  • Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.14.0
  • Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.14.0
  • Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.14.0
  • Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.14.0
  • Magick.NET-Q16-x64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-x64 --version 14.14.0
  • Magick.NET-Q16-x86 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q16-x86 --version 14.14.0
  • Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q8-AnyCPU --version 14.14.0
  • Magick.NET-Q8-arm64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q8-arm64 --version 14.14.0
  • Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.14.0
  • Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.14.0
  • Magick.NET-Q8-x64 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q8-x64 --version 14.14.0
  • Magick.NET-Q8-x86 (NuGet): upgrade to 14.14.0 or later
    dotnet add package Magick.NET-Q8-x86 --version 14.14.0

Technical details

A vulnerability exists in the ImageMagick DCM (DICOM) decoder due to improper input validation (CWE-20). A missing check allows the decoder to process images with invalid dimensions, which can bypass security policies and trigger crashes during subsequent image operations. The attack can be executed remotely over a network without authentication or user interaction. This results in a high impact on availability (Denial of Service). The issue is addressed in Magick.NET version 14.14.0.

Affected products

  • ImageMagick Magick.NET-Q16-AnyCPU < 14.14.0
  • ImageMagick Magick.NET-Q16-HDRI-AnyCPU < 14.14.0
  • ImageMagick Magick.NET-Q16-HDRI-OpenMP-arm64 < 14.14.0
  • ImageMagick Magick.NET-Q16-HDRI-arm64 < 14.14.0
  • ImageMagick Magick.NET-Q16-HDRI-x64 < 14.14.0
  • ImageMagick Magick.NET-Q16-HDRI-x86 < 14.14.0
  • ImageMagick Magick.NET-Q16-OpenMP-arm64 < 14.14.0
  • ImageMagick Magick.NET-Q16-OpenMP-x64 < 14.14.0
  • ImageMagick Magick.NET-Q16-arm64 < 14.14.0
  • ImageMagick Magick.NET-Q16-x64 < 14.14.0
  • ImageMagick Magick.NET-Q16-x86 < 14.14.0
  • ImageMagick Magick.NET-Q8-AnyCPU < 14.14.0
  • ImageMagick Magick.NET-Q8-OpenMP-arm64 < 14.14.0
  • ImageMagick Magick.NET-Q8-OpenMP-x64 < 14.14.0
  • ImageMagick Magick.NET-Q8-arm64 < 14.14.0
  • ImageMagick Magick.NET-Q8-x64 < 14.14.0
  • ImageMagick Magick.NET-Q8-x86 < 14.14.0

Identifiers

  • CVE-2026-49218
  • GHSA-8pj9-6897-74xc

Timeline

  • 2026-05-30: disclosed: Initial disclosure by dlemstra
  • 2026-06-10: advisory: NVD publication date
  • 2026-06-25: advisory: GitHub Advisory reviewed and updated

References

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