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

Source: https://junglewise.ai/threats/cve-2026-49218-imagemagick-denial-of-service-in-dcm-decoder  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-10. Updated: 2026-06-25  
License: CC BY 4.0 with a link back

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)](https://junglewise.ai/threats/technologies/magick-net-q16-anycpu), [Magick.NET-Q16-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-arm64), [Magick.NET-Q16-HDRI-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-anycpu), [Magick.NET-Q16-HDRI-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-arm64), [Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-openmp-arm64), [Magick.NET-Q16-HDRI-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-x64), [Magick.NET-Q16-HDRI-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-x86), [Magick.NET-Q16-OpenMP-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-openmp-arm64), [Magick.NET-Q16-OpenMP-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-openmp-x64), [Magick.NET-Q16-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-x64), [Magick.NET-Q16-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-x86), [Magick.NET-Q8-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-anycpu), [Magick.NET-Q8-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-arm64), [Magick.NET-Q8-OpenMP-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-openmp-arm64), [Magick.NET-Q8-OpenMP-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-openmp-x64), [Magick.NET-Q8-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-x64), [Magick.NET-Q8-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-x86). Vendors: [NuGet](https://junglewise.ai/threats/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

  ```sh
  dotnet add package Magick.NET-Q16-AnyCPU --version 14.14.0
  ```

- Magick.NET-Q16-arm64 (NuGet): upgrade to 14.14.0 or later

  ```sh
  dotnet add package Magick.NET-Q16-arm64 --version 14.14.0
  ```

- Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.14.0 or later

  ```sh
  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

  ```sh
  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

  ```sh
  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

  ```sh
  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

  ```sh
  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

  ```sh
  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

  ```sh
  dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.14.0
  ```

- Magick.NET-Q16-x64 (NuGet): upgrade to 14.14.0 or later

  ```sh
  dotnet add package Magick.NET-Q16-x64 --version 14.14.0
  ```

- Magick.NET-Q16-x86 (NuGet): upgrade to 14.14.0 or later

  ```sh
  dotnet add package Magick.NET-Q16-x86 --version 14.14.0
  ```

- Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.14.0 or later

  ```sh
  dotnet add package Magick.NET-Q8-AnyCPU --version 14.14.0
  ```

- Magick.NET-Q8-arm64 (NuGet): upgrade to 14.14.0 or later

  ```sh
  dotnet add package Magick.NET-Q8-arm64 --version 14.14.0
  ```

- Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.14.0 or later

  ```sh
  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

  ```sh
  dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.14.0
  ```

- Magick.NET-Q8-x64 (NuGet): upgrade to 14.14.0 or later

  ```sh
  dotnet add package Magick.NET-Q8-x64 --version 14.14.0
  ```

- Magick.NET-Q8-x86 (NuGet): upgrade to 14.14.0 or later

  ```sh
  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

- [https://api.github.com/users/OwenSanzas](https://api.github.com/users/OwenSanzas)
- [https://github.com/OwenSanzas](https://github.com/OwenSanzas)
- [https://api.github.com/users/OwenSanzas/gists%7B/gist_id%7D](https://api.github.com/users/OwenSanzas/gists%7B/gist_id%7D)
- [https://api.github.com/users/OwenSanzas/repos](https://api.github.com/users/OwenSanzas/repos)
- [https://avatars.githubusercontent.com/u/108382772?v=4](https://avatars.githubusercontent.com/u/108382772?v=4)
- [https://api.github.com/users/OwenSanzas/events%7B/privacy%7D](https://api.github.com/users/OwenSanzas/events%7B/privacy%7D)

## Related threats

- [ImageMagick integer overflow in JNX decoder](https://junglewise.ai/threats/cve-2026-62946-imagemagick-integer-overflow-in-jnx-decoder)
- [ImageMagick heap buffer overflow in fx operation](https://junglewise.ai/threats/cve-2026-62363-imagemagick-heap-buffer-overflow-in-fx-operation)
- [ImageMagick heap buffer overwrite in morphology operation](https://junglewise.ai/threats/cve-2026-62343-imagemagick-heap-buffer-overwrite-in-morphology-operation)
- [ImageMagick memory leak in magick CLI via invalid options](https://junglewise.ai/threats/cve-2026-66011-imagemagick-memory-leak-in-magick-cli-via-invalid-options)
- [ImageMagick memory leak in TIFF encoder](https://junglewise.ai/threats/cve-2026-61872-imagemagick-memory-leak-in-tiff-encoder)