CVE-2026-62343: ImageMagick heap buffer overwrite in morphology operation

CVE-2026-62343 · Severity: medium · CVSS 4.7 · Published 2026-07-30

ImageMagick, a widely used tool for editing and processing digital images, is vulnerable to a memory corruption issue. By providing a specially crafted image processing instruction (an invalid kernel), an attacker could cause the application to crash. This could lead to a denial-of-service, impacting the availability of automated image processing workflows or web services that rely on this software.

Technologies: ImageMagick, 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: ImageMagick, NuGet.

Quick answers

Is CVE-2026-62343 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-62343 being exploited in the wild.
How severe is CVE-2026-62343?
Medium severity, with a CVSS score of 4.7, published 30 July 2026.
Which products and versions are affected?
ImageMagick < 6.9.13-51, >= 7.0.1-0 < 7.1.2-26; Magick.NET-Q16-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.15.0; Magick.NET-Q16-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.15.0; Magick.NET-Q16-HDRI-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.15.0; and 14 more.
Is there a fix for CVE-2026-62343?
Yes. Magick.NET-Q16-AnyCPU (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-x64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-x86 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-x64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-x86 (NuGet): upgrade to 14.15.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-62343 attacked?
It is attacked with local access, in a software library.
Am I affected by CVE-2026-62343?
Check whether you run ImageMagick, Magick.NET-Q16-AnyCPU (NuGet), Magick.NET-Q16-arm64 (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 14.15.0 or later
    dotnet add package Magick.NET-Q16-AnyCPU --version 14.15.0
  • Magick.NET-Q16-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-arm64 --version 14.15.0
  • Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.15.0
  • Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.15.0
  • Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.15.0
  • Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.15.0
  • Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.15.0
  • Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.15.0
  • Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.15.0
  • Magick.NET-Q16-x64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-x64 --version 14.15.0
  • Magick.NET-Q16-x86 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-x86 --version 14.15.0
  • Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-AnyCPU --version 14.15.0
  • Magick.NET-Q8-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-arm64 --version 14.15.0
  • Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.15.0
  • Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.15.0
  • Magick.NET-Q8-x64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-x64 --version 14.15.0
  • Magick.NET-Q8-x86 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-x86 --version 14.15.0

Technical details

A heap buffer overwrite vulnerability exists in ImageMagick's morphology operation component. The flaw is triggered by an integer overflow (CWE-190) when processing an invalid user-supplied kernel, leading to a memory corruption event. Exploitation requires a local attacker to provide a malicious kernel and typically involves user interaction (e.g., a user opening a crafted file or a service processing a specific request). Successful exploitation results in a crash (Denial of Service), though the CVSS assessment indicates no impact on confidentiality or integrity. The issue is resolved in versions 6.9.13-51 and 7.1.2-26.

Affected products

  • ImageMagick ImageMagick < 6.9.13-51, >= 7.0.1-0 < 7.1.2-26

Identifiers

  • CVE-2026-62343
  • GHSA-f5m7-cqgw-8hm7

Timeline

  • 2026-07-14: advisory: GitHub advisory published by maintainers
  • 2026-07-29: disclosed: NVD publication date
  • 2026-07-29: patched: Fixes confirmed in versions 6.9.13-51 and 7.1.2-26

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.