CVE-2026-40310: ImageMagick: Heap out-of-bounds write in JP2 encoder

Published Apr 13, 2026
·
Updated

Heap out-of-bounds write in the JP2 encoder with when a user specifies an invalid sampling index.

Affected Software

17 affected componentsFixes available
ImageMagick ImageMagick<7.1.2-19, <6.9.13-44
nuget/Magick.NET-Q8-x86<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-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-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

Event History

Apr 13, 2026
CVE Published
via MITRE·09:32 PM
Data Sourced
via MITRE·09:32 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:16 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:16 PM
RemedyAffected Software
Apr 14, 2026
Advisory Published
via GitHub·06:51 PM
Data Sourced
via GitHub·06:51 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-40310?

CVE-2026-40310 is classified as a critical severity vulnerability due to the potential for heap out-of-bounds writes.

2

How do I fix CVE-2026-40310?

To fix CVE-2026-40310, upgrade ImageMagick to version 7.1.2-19 or 6.9.13-44 or later.

3

What versions of ImageMagick are affected by CVE-2026-40310?

CVE-2026-40310 affects ImageMagick versions prior to 7.1.2-19 and 6.9.13-44.

4

What type of vulnerability is CVE-2026-40310?

CVE-2026-40310 is a heap out-of-bounds write vulnerability in the JP2 encoder.

5

Can CVE-2026-40310 be exploited remotely?

Yes, CVE-2026-40310 can potentially be exploited remotely if an attacker provides a specially crafted JP2 image.

Contact

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