CVE-2026-33899: ImageMagick: Heap BufferOverflow write of single zero byte when parsing XML

Published Apr 13, 2026
·
Updated

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-189 and 6.9.13-44, when Magick parses an XML file it is possible that a single zero byte is written out of the bounds. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

Affected Software

22 affected componentsFixes available
nuget/magick.net-q8-x86<14.12.0
14.12.0
nuget/magick.net-q8-x64<14.12.0
14.12.0
nuget/magick.net-q8-arm64<14.12.0
14.12.0
nuget/magick.net-q8-openmp-x64<14.12.0
14.12.0
nuget/magick.net-q8-openmp-arm64<14.12.0
14.12.0
nuget/magick.net-q8-anycpu<14.12.0
14.12.0
nuget/magick.net-q16-x86<14.12.0
14.12.0
nuget/magick.net-q16-x64<14.12.0
14.12.0
nuget/magick.net-q16-arm64<14.12.0
14.12.0
nuget/magick.net-q16-openmp-x64<14.12.0
14.12.0
nuget/magick.net-q16-openmp-arm64<14.12.0
14.12.0
nuget/magick.net-q16-hdri-x86<14.12.0
14.12.0
nuget/magick.net-q16-hdri-x64<14.12.0
14.12.0
nuget/magick.net-q16-hdri-arm64<14.12.0
14.12.0
nuget/magick.net-q16-hdri-openmp-arm64<14.12.0
14.12.0
nuget/magick.net-q16-hdri-anycpu<14.12.0
14.12.0
nuget/magick.net-q16-anycpu<14.12.0
14.12.0
ImageMagick ImageMagick<6.9.13-44
ImageMagick ImageMagick>=7.0.0-0<7.1.2-19
alpine/imagemagick>=7.0.0-0<7.1.2.19-r0
7.1.2.19-r0
alpine/imagemagick>=7.0.0-0<7.1.2.19-r0
7.1.2.19-r0
debian/imagemagick
8:6.9.11.60+dfsg-1.6+deb12u118:6.9.11.60+dfsg-1.6+deb12u158:7.1.1.43+dfsg1-1+deb13u128:7.1.1.43+dfsg1-1+deb13u148:7.1.2.34+dfsg1-18:7.1.2.35+dfsg1-2

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 14.12.0
  2. Upgrade

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

    Fixed in 14.12.0
  3. Upgrade

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

    Fixed in 14.12.0
  4. Upgrade

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

    Fixed in 14.12.0
  5. Upgrade

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

    Fixed in 14.12.0
  6. Upgrade

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

    Fixed in 14.12.0
  7. Upgrade

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

    Fixed in 14.12.0
  8. Upgrade

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

    Fixed in 14.12.0
  9. Upgrade

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

    Fixed in 14.12.0
  10. Upgrade

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

    Fixed in 14.12.0
  11. Upgrade

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

    Fixed in 14.12.0
  12. Upgrade

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

    Fixed in 14.12.0
  13. Upgrade

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

    Fixed in 14.12.0
  14. Upgrade

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

    Fixed in 14.12.0
  15. Upgrade

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

    Fixed in 14.12.0
  16. Upgrade

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

    Fixed in 14.12.0
  17. Upgrade

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

    Fixed in 14.12.0
  18. Upgrade

    Upgrade alpine/imagemagick to a version that resolves this vulnerability.

    Fixed in 7.1.2.19-r0
  19. Upgrade

    Upgrade debian/imagemagick to a version that resolves this vulnerability.

    Fixed in 8:6.9.11.60+dfsg-1.6+deb12u11Fixed in 8:6.9.11.60+dfsg-1.6+deb12u15Fixed in 8:7.1.1.43+dfsg1-1+deb13u12Fixed in 8:7.1.1.43+dfsg1-1+deb13u14Fixed in 8:7.1.2.34+dfsg1-1Fixed in 8:7.1.2.35+dfsg1-2
  20. Upgrade

    Upgrade ImageMagick to a version that resolves this vulnerability.

    Fixed in 6.9.13-44
  21. Upgrade

    Upgrade ImageMagick to a version that resolves this vulnerability.

    Fixed in 7.1.2-19

Event History

Apr 13, 2026
Advisory Published
via GitHub·07:33 PM
Data Sourced
via GitHub·07:33 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·08:46 PM
Data Sourced
via MITRE·08:46 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·09:16 PM
DescriptionSeverityWeakness
Data Sourced
via OSV·09:16 PM
DescriptionSeverityAffected Software
Apr 17, 2026
Data Sourced
via NVD·09:20 PM
RemedyAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2026-33899?

CVE-2026-33899 has been classified with a high severity due to its potential to cause a heap buffer overflow.

2

How do I fix CVE-2026-33899?

To fix CVE-2026-33899, upgrade ImageMagick to version 7.1.2-189 or later, or 6.9.13-44 or later.

3

What versions of ImageMagick are affected by CVE-2026-33899?

CVE-2026-33899 affects ImageMagick versions below 7.1.2-189 and 6.9.13-44.

4

What is the cause of the vulnerability in CVE-2026-33899?

The vulnerability in CVE-2026-33899 is caused by a heap buffer overflow when parsing XML files.

5

What type of vulnerability is CVE-2026-33899?

CVE-2026-33899 is categorized as a buffer overflow vulnerability.

Company

Resources

Contact

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