CVE-2026-46523: ImageMagick: Use-After-Free in MSL decoder.

Published May 18, 2026
·
Updated

A crafted MSL image can trigger a heap-use-after-free.

Affected Software

18 affected componentsFixes available
nuget/Magick.NET-Q8-x86<14.13.1
14.13.1
nuget/Magick.NET-Q8-arm64<14.13.1
14.13.1
nuget/Magick.NET-Q8-OpenMP-x64<14.13.1
14.13.1
nuget/Magick.NET-Q8-OpenMP-arm64<14.13.1
14.13.1
nuget/Magick.NET-Q8-AnyCPU<14.13.1
14.13.1
nuget/Magick.NET-Q16-x86<14.13.1
14.13.1
nuget/Magick.NET-Q16-arm64<14.13.1
14.13.1
nuget/Magick.NET-Q16-OpenMP-x64<14.13.1
14.13.1
nuget/Magick.NET-Q16-OpenMP-arm64<14.13.1
14.13.1
nuget/Magick.NET-Q16-HDRI-x86<14.13.1
14.13.1
nuget/Magick.NET-Q16-HDRI-x64<14.13.1
14.13.1
nuget/Magick.NET-Q16-HDRI-arm64<14.13.1
14.13.1
nuget/Magick.NET-Q16-HDRI-OpenMP-x64<14.13.1
14.13.1
nuget/Magick.NET-Q16-HDRI-OpenMP-arm64<14.13.1
14.13.1
nuget/Magick.NET-Q16-HDRI-AnyCPU<14.13.1
14.13.1
nuget/Magick.NET-Q16-AnyCPU<14.13.1
14.13.1
ImageMagick ImageMagick<6.9.13-48
ImageMagick ImageMagick>=7.0.0-0<7.1.2-23

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade nuget/Magick.NET-Q8-x86 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  2. Upgrade

    Upgrade nuget/Magick.NET-Q8-x64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  3. Upgrade

    Upgrade nuget/Magick.NET-Q8-arm64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  4. Upgrade

    Upgrade nuget/Magick.NET-Q8-OpenMP-x64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  5. Upgrade

    Upgrade nuget/Magick.NET-Q8-OpenMP-arm64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  6. Upgrade

    Upgrade nuget/Magick.NET-Q8-AnyCPU to a version that resolves this vulnerability.

    Fixed in 14.13.1
  7. Upgrade

    Upgrade nuget/Magick.NET-Q16-x86 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  8. Upgrade

    Upgrade nuget/Magick.NET-Q16-x64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  9. Upgrade

    Upgrade nuget/Magick.NET-Q16-arm64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  10. Upgrade

    Upgrade nuget/Magick.NET-Q16-OpenMP-x64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  11. Upgrade

    Upgrade nuget/Magick.NET-Q16-OpenMP-arm64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  12. Upgrade

    Upgrade nuget/Magick.NET-Q16-HDRI-x86 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  13. Upgrade

    Upgrade nuget/Magick.NET-Q16-HDRI-x64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  14. Upgrade

    Upgrade nuget/Magick.NET-Q16-HDRI-arm64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  15. Upgrade

    Upgrade nuget/Magick.NET-Q16-HDRI-OpenMP-x64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  16. Upgrade

    Upgrade nuget/Magick.NET-Q16-HDRI-OpenMP-arm64 to a version that resolves this vulnerability.

    Fixed in 14.13.1
  17. Upgrade

    Upgrade nuget/Magick.NET-Q16-HDRI-AnyCPU to a version that resolves this vulnerability.

    Fixed in 14.13.1
  18. Upgrade

    Upgrade nuget/Magick.NET-Q16-AnyCPU to a version that resolves this vulnerability.

    Fixed in 14.13.1
  19. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 7.1.2.23
  20. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.9.13-48

Event History

May 18, 2026
Advisory Published
via GitHub·08:37 PM
Data Sourced
via GitHub·08:37 PM
DescriptionSeverityWeaknessAffected Software
Jun 10, 2026
CVE Published
via MITRE·09:22 PM
Data Sourced
via MITRE·09:22 PM
DescriptionSeverityWeakness
Data Sourced
via Red Hat·10:01 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·10:16 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2026-46523?

CVE-2026-46523 is considered a critical vulnerability due to its potential to trigger a heap-use-after-free condition.

2

How do I fix CVE-2026-46523?

To fix CVE-2026-46523, upgrade to version 14.13.1 of the affected Magick.NET packages.

3

What software is affected by CVE-2026-46523?

CVE-2026-46523 affects multiple Magick.NET packages including Q8, Q16, and their various architecture-specific versions.

4

What type of vulnerability is CVE-2026-46523?

CVE-2026-46523 is a heap-use-after-free vulnerability that can be exploited through crafted MSL images.

5

What can happen if I don't address CVE-2026-46523?

Failing to address CVE-2026-46523 may lead to application crashes and potential remote code execution.

Company

Resources

Contact

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