# CVE-2026-56362: ImageMagick heap overflow in GetPixelIndex

Source: https://junglewise.ai/threats/cve-2026-56362-imagemagick-heap-overflow-in-getpixelindex  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-08. Updated: 2026-07-08  
License: CC BY 4.0 with a link back

CVE-2026-56362 · Severity: low · CVSS 3.3 · Published 2026-07-08

ImageMagick is a widely used software suite for displaying, converting, and editing images. A vulnerability in how it manages image memory could allow an attacker with high-level access to cause a minor information leak or a service crash. This occurs when the software fails to properly synchronize image metadata with its internal memory storage during specific failure conditions.

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-OpenMP-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-openmp-x64), [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-OpenMP-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-openmp-x86), [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-2026-56362 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56362 being exploited in the wild.

**How severe is CVE-2026-56362?** Low severity, with a CVSS score of 3.3, published 8 July 2026.

**Which products and versions are affected?** Magick.NET-Q16-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.10.3; Magick.NET-Q16-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.10.3; Magick.NET-Q16-HDRI-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.10.3; Magick.NET-Q16-HDRI-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.10.3; and 15 more.

**Is there a fix for CVE-2026-56362?** Yes. Magick.NET-Q16-AnyCPU (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-arm64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-HDRI-OpenMP-x64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-OpenMP-x86 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-x64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q16-x86 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q8-arm64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q8-x64 (NuGet): upgrade to 14.10.3 or later; Magick.NET-Q8-x86 (NuGet): upgrade to 14.10.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-56362 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-56362?** 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 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-AnyCPU --version 14.10.3
  ```

- Magick.NET-Q16-arm64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-arm64 --version 14.10.3
  ```

- Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.10.3
  ```

- Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.10.3
  ```

- Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.10.3
  ```

- Magick.NET-Q16-HDRI-OpenMP-x64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-HDRI-OpenMP-x64 --version 14.10.3
  ```

- Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.10.3
  ```

- Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.10.3
  ```

- Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.10.3
  ```

- Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.10.3
  ```

- Magick.NET-Q16-OpenMP-x86 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-OpenMP-x86 --version 14.10.3
  ```

- Magick.NET-Q16-x64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-x64 --version 14.10.3
  ```

- Magick.NET-Q16-x86 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q16-x86 --version 14.10.3
  ```

- Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q8-AnyCPU --version 14.10.3
  ```

- Magick.NET-Q8-arm64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q8-arm64 --version 14.10.3
  ```

- Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.10.3
  ```

- Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.10.3
  ```

- Magick.NET-Q8-x64 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q8-x64 --version 14.10.3
  ```

- Magick.NET-Q8-x86 (NuGet): upgrade to 14.10.3 or later

  ```sh
  dotnet add package Magick.NET-Q8-x86 --version 14.10.3
  ```


## Technical details

A heap-buffer-overflow read vulnerability exists in ImageMagick's GetPixelIndex function. The root cause is located in OpenPixelCache, which updates image channel metadata before successfully completing pixel cache memory allocation. If an attacker can trigger simultaneous memory and disk allocation failures, the resulting metadata desynchronization leads to an out-of-bounds read (CWE-125) when GetPixelIndex is subsequently called. Exploitation requires high privileges and specific environmental conditions (high attack complexity), potentially allowing for limited information disclosure or a denial-of-service state. The issue is patched in versions 7.1.2-15 and 6.9.13-40.

## Affected products

- ImageMagick ImageMagick < 7.1.2-15, < 6.9.13-40

## Identifiers

- CVE-2026-56362
- GHSA-gq5v-qf8q-fp77

## Timeline

- 2026-02-23: advisory: GitHub Security Advisory published
- 2026-07-08: disclosed: NVD publication date

## References

- [https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-gq5v-qf8q-fp77](https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-gq5v-qf8q-fp77)
- [https://www.vulncheck.com/advisories/imagemagick-heap-buffer-overflow-read-in-getpixelindex-via-openpixelcache-metadata-desynchronization](https://www.vulncheck.com/advisories/imagemagick-heap-buffer-overflow-read-in-getpixelindex-via-openpixelcache-metadata-desynchronization)

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