CVE-2026-27798: ImageMagick: Heap Buffer Over-read in WaveletDenoise when processing small images

Published Feb 25, 2026
·
Updated

A heap buffer over-read vulnerability occurs when processing an image with small dimension using the -wavelet-denoise operator.

==3693336==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x511000001280 at pc 0x5602c8b0cc75 bp 0x7ffcb105d510 sp 0x7ffcb105d500 READ of size 4 at 0x511000001280 thread T0

Other sources

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a heap buffer over-read vulnerability occurs when processing an image with small dimension using the -wavelet-denoise operator. Versions 7.1.2-15 and 6.9.13-40 contain a patch.

— MITRE

Affected Software

21 affected componentsFixes available
ImageMagick ImageMagick<6.9.13-40
ImageMagick ImageMagick>=7.0.0-0<7.1.2-15
Dlemstra Magick.net<14.10.3
nuget/Magick.NET-Q8-x86<14.10.3
14.10.3
nuget/Magick.NET-Q8-arm64<14.10.3
14.10.3
nuget/Magick.NET-Q8-OpenMP-x64<14.10.3
14.10.3
nuget/Magick.NET-Q8-OpenMP-arm64<14.10.3
14.10.3
nuget/Magick.NET-Q8-AnyCPU<14.10.3
14.10.3
nuget/Magick.NET-Q16-x86<14.10.3
14.10.3
nuget/Magick.NET-Q16-arm64<14.10.3
14.10.3
nuget/Magick.NET-Q16-OpenMP-x86<14.10.3
14.10.3
nuget/Magick.NET-Q16-OpenMP-x64<14.10.3
14.10.3
nuget/Magick.NET-Q16-OpenMP-arm64<14.10.3
14.10.3
nuget/Magick.NET-Q16-HDRI-x86<14.10.3
14.10.3
nuget/Magick.NET-Q16-HDRI-x64<14.10.3
14.10.3
nuget/Magick.NET-Q16-HDRI-arm64<14.10.3
14.10.3
nuget/Magick.NET-Q16-HDRI-OpenMP-x64<14.10.3
14.10.3
nuget/Magick.NET-Q16-HDRI-OpenMP-arm64<14.10.3
14.10.3
nuget/Magick.NET-Q16-HDRI-AnyCPU<14.10.3
14.10.3
nuget/Magick.NET-Q16-AnyCPU<14.10.3
14.10.3
debian/imagemagick<=8:6.9.11.60+dfsg-1.3+deb11u4
8:6.9.11.60+dfsg-1.3+deb11u148:6.9.11.60+dfsg-1.6+deb12u98:6.9.11.60+dfsg-1.6+deb12u118:7.1.1.43+dfsg1-1+deb13u88:7.1.1.43+dfsg1-1+deb13u108:7.1.2.25+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 14.10.3
  2. Upgrade

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

    Fixed in 14.10.3
  3. Upgrade

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

    Fixed in 14.10.3
  4. Upgrade

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

    Fixed in 14.10.3
  5. Upgrade

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

    Fixed in 14.10.3
  6. Upgrade

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

    Fixed in 14.10.3
  7. Upgrade

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

    Fixed in 14.10.3
  8. Upgrade

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

    Fixed in 14.10.3
  9. Upgrade

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

    Fixed in 14.10.3
  10. Upgrade

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

    Fixed in 14.10.3
  11. Upgrade

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

    Fixed in 14.10.3
  12. Upgrade

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

    Fixed in 14.10.3
  13. Upgrade

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

    Fixed in 14.10.3
  14. Upgrade

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

    Fixed in 14.10.3
  15. Upgrade

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

    Fixed in 14.10.3
  16. Upgrade

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

    Fixed in 14.10.3
  17. Upgrade

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

    Fixed in 14.10.3
  18. Upgrade

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

    Fixed in 14.10.3
  19. Upgrade

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

    Fixed in 14.10.3
  20. Upgrade

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

    Fixed in 8:6.9.11.60+dfsg-1.3+deb11u14Fixed in 8:6.9.11.60+dfsg-1.6+deb12u9Fixed in 8:6.9.11.60+dfsg-1.6+deb12u11Fixed in 8:7.1.1.43+dfsg1-1+deb13u8Fixed in 8:7.1.1.43+dfsg1-1+deb13u10Fixed in 8:7.1.2.25+dfsg1-2
  21. Upgrade

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

    Fixed in 7.1.2-15
  22. Upgrade

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

    Fixed in 6.9.13-40

Event History

Feb 25, 2026
Advisory Published
via GitHub·07:24 PM
Data Sourced
via GitHub·07:24 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·11:18 PM
Data Sourced
via MITRE·11:18 PM
DescriptionSeverityWeakness
Feb 26, 2026
Data Sourced
via NVD·12:16 AM
RemedyDescriptionSeverityWeaknessAffected Software
Jun 26, 2026
Data Sourced
via Ubuntu·04:26 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Launchpad·04:27 PM
Description
Jun 28, 2026
Data Sourced
via Debian·04:29 PM
DescriptionAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2026-27798?

CVE-2026-27798 has a high severity rating due to the potential for a heap buffer over-read when processing small images.

2

How do I fix CVE-2026-27798?

To fix CVE-2026-27798, upgrade to Magick.NET version 14.10.3 or later.

3

Which versions of ImageMagick are affected by CVE-2026-27798?

CVE-2026-27798 affects ImageMagick versions prior to 7.1.2-15 and 6.9.13-40.

4

What types of images cause CVE-2026-27798?

CVE-2026-27798 is triggered when processing small dimension images using the -wavelet-denoise operator.

5

What is the impact of exploiting CVE-2026-27798?

Exploitation of CVE-2026-27798 may lead to application crashes or potential information disclosure due to memory access violations.

Company

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