CVE-2026-55597: ImageMagick: Heap Buffer Over-Write in JP2 encoder when due to incorrect handling of arguments

Published Jul 1, 2026
·
Updated

Due to incorrect handling of arguments a heap buffer over-write can occur in the JP2 encoder.

Other sources

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-26, an incorrect handling of arguments can cause a heap buffer over-write in the JP2 encoder. This issue has been fixed in version7.1.2-26.

— MITRE

Affected Software

17 affected componentsFixes available
ImageMagick ImageMagick<7.1.2-26
ImageMagick ImageMagick<7.1.2-26
nuget/Magick.NET-Q16-HDRI-arm64<14.15.0
14.15.0
nuget/Magick.NET-Q8-x86<14.15.0
14.15.0
nuget/Magick.NET-Q8-arm64<14.15.0
14.15.0
nuget/Magick.NET-Q8-OpenMP-x64<14.15.0
14.15.0
nuget/Magick.NET-Q8-OpenMP-arm64<14.15.0
14.15.0
nuget/Magick.NET-Q8-AnyCPU<14.15.0
14.15.0
nuget/Magick.NET-Q16-x86<14.15.0
14.15.0
nuget/Magick.NET-Q16-arm64<14.15.0
14.15.0
nuget/Magick.NET-Q16-OpenMP-x64<14.15.0
14.15.0
nuget/Magick.NET-Q16-OpenMP-arm64<14.15.0
14.15.0
nuget/Magick.NET-Q16-HDRI-x86<14.15.0
14.15.0
nuget/Magick.NET-Q16-HDRI-x64<14.15.0
14.15.0
nuget/Magick.NET-Q16-HDRI-OpenMP-arm64<14.15.0
14.15.0
nuget/Magick.NET-Q16-HDRI-AnyCPU<14.15.0
14.15.0
nuget/Magick.NET-Q16-AnyCPU<14.15.0
14.15.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 14.15.0
  2. Upgrade

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

    Fixed in 14.15.0
  3. Upgrade

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

    Fixed in 14.15.0
  4. Upgrade

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

    Fixed in 14.15.0
  5. Upgrade

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

    Fixed in 14.15.0
  6. Upgrade

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

    Fixed in 14.15.0
  7. Upgrade

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

    Fixed in 14.15.0
  8. Upgrade

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

    Fixed in 14.15.0
  9. Upgrade

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

    Fixed in 14.15.0
  10. Upgrade

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

    Fixed in 14.15.0
  11. Upgrade

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

    Fixed in 14.15.0
  12. Upgrade

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

    Fixed in 14.15.0
  13. Upgrade

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

    Fixed in 14.15.0
  14. Upgrade

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

    Fixed in 14.15.0
  15. Upgrade

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

    Fixed in 14.15.0
  16. Upgrade

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

    Fixed in 14.15.0
  17. Upgrade

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

    Fixed in 14.15.0
  18. Upgrade

    Upgrade ImageMagick JP2 encoder to a version that resolves this vulnerability.

    Fixed in 7.1.2-26

Event History

Jul 1, 2026
CVE Published
via MITRE·07:03 PM
Data Sourced
via MITRE·07:03 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:16 PM
DescriptionSeverityWeaknessAffected Software
Jul 24, 2026
Advisory Published
via GitHub·02:06 PM
Data Sourced
via GitHub·02:06 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-55597?

CVE-2026-55597 has a severity level of medium with a score of 5.5.

2

How do I fix CVE-2026-55597?

To fix CVE-2026-55597, update ImageMagick to version 7.1.2-26 or later.

3

What type of vulnerability is CVE-2026-55597?

CVE-2026-55597 is a heap buffer over-write vulnerability in the JP2 encoder of ImageMagick.

4

Which versions of ImageMagick are affected by CVE-2026-55597?

Versions of ImageMagick prior to 7.1.2-26 are affected by CVE-2026-55597.

5

What causes the vulnerability CVE-2026-55597?

CVE-2026-55597 is caused by incorrect handling of arguments in the JP2 encoder of ImageMagick.

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