CVE-2026-34238: ImageMagick: Integer overflow in despeckle operation causes heap buffer overflow on 32-bit builds

Published Apr 13, 2026
·
Updated

An integer overflow in the despeckle operation causes a heap buffer overflow on 32-bit builds that will result in an out of bounds write.

==1551685==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xea2fb818 at pc 0x56cbc42a bp 0xffc4ce48 sp 0xffc4ce38 WRITE of size 8 at 0xea2fb818 thread T0

Other sources

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, an integer overflow in the despeckle operation causes a heap buffer overflow on 32-bit builds that will result in an out of bounds write. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

— MITRE

Affected Software

11 affected componentsFixes available
nuget/magick.net-q8-x86<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-hdri-x86<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-AnyCPU to a version that resolves this vulnerability.

    Fixed in 14.12.0
  3. Upgrade

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

    Fixed in 14.12.0
  4. Upgrade

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

    Fixed in 14.12.0
  5. Upgrade

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

    Fixed in 14.12.0
  6. Upgrade

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

    Fixed in 14.12.0
  7. Upgrade

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

    Fixed in 7.1.2.19-r0
  8. 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
  9. Upgrade

    Upgrade ImageMagick to a version that resolves this vulnerability.

    Fixed in 6.9.13-44
  10. 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·07:10 PM
Data Sourced
via GitHub·07:10 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·09:14 PM
Data Sourced
via MITRE·09:14 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·10:16 PM
DescriptionSeverityAffected 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-2026-34238?

CVE-2026-34238 has a high severity rating due to its potential to cause a heap buffer overflow.

2

How do I fix CVE-2026-34238?

To fix CVE-2026-34238, upgrade to ImageMagick version 14.12.0 or later.

3

What is affected by CVE-2026-34238?

CVE-2026-34238 affects certain versions of ImageMagick, particularly 32-bit builds.

4

Is CVE-2026-34238 present in the latest ImageMagick versions?

No, CVE-2026-34238 has been addressed in ImageMagick version 14.12.0 and later.

5

Can CVE-2026-34238 lead to remote code execution?

Yes, CVE-2026-34238 can potentially allow an attacker to execute arbitrary code due to the heap buffer overflow.

Company

Resources

Contact

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