CVE-2026-28691: ImageMagick has an uninitialized pointer dereference in JBIG decoder

Published Mar 9, 2026
·
Updated

An uninitialized pointer dereference vulnerability exists in the JBIG decoder due to a missing check.

Affected Software

21 affected componentsFixes available
ImageMagick ImageMagick<7.1.2-16, <6.9.13-41
ImageMagick ImageMagick<6.9.13-41
ImageMagick ImageMagick>=7.0.0-0<7.1.2-16
nuget/Magick.NET-Q8-x86<14.10.4
14.10.4
nuget/Magick.NET-Q8-arm64<14.10.4
14.10.4
nuget/Magick.NET-Q8-OpenMP-x64<14.10.4
14.10.4
nuget/Magick.NET-Q8-OpenMP-arm64<14.10.4
14.10.4
nuget/Magick.NET-Q8-AnyCPU<14.10.4
14.10.4
nuget/Magick.NET-Q16-HDRI-OpenMP-x64<14.10.4
14.10.4
nuget/Magick.NET-Q16-x86<14.10.4
14.10.4
nuget/Magick.NET-Q16-arm64<14.10.4
14.10.4
nuget/Magick.NET-Q16-OpenMP-x86<14.10.4
14.10.4
nuget/Magick.NET-Q16-OpenMP-x64<14.10.4
14.10.4
nuget/Magick.NET-Q16-OpenMP-arm64<14.10.4
14.10.4
nuget/Magick.NET-Q16-HDRI-x86<14.10.4
14.10.4
nuget/Magick.NET-Q16-HDRI-x64<14.10.4
14.10.4
nuget/Magick.NET-Q16-HDRI-arm64<14.10.4
14.10.4
nuget/Magick.NET-Q16-HDRI-OpenMP-arm64<14.10.4
14.10.4
nuget/Magick.NET-Q16-HDRI-AnyCPU<14.10.4
14.10.4
nuget/Magick.NET-Q16-AnyCPU<14.10.4
14.10.4
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 14.10.4
  2. Upgrade

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

    Fixed in 14.10.4
  3. Upgrade

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

    Fixed in 14.10.4
  4. Upgrade

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

    Fixed in 14.10.4
  5. Upgrade

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

    Fixed in 14.10.4
  6. Upgrade

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

    Fixed in 14.10.4
  7. Upgrade

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

    Fixed in 14.10.4
  8. Upgrade

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

    Fixed in 14.10.4
  9. Upgrade

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

    Fixed in 14.10.4
  10. Upgrade

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

    Fixed in 14.10.4
  11. Upgrade

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

    Fixed in 14.10.4
  12. Upgrade

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

    Fixed in 14.10.4
  13. Upgrade

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

    Fixed in 14.10.4
  14. Upgrade

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

    Fixed in 14.10.4
  15. Upgrade

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

    Fixed in 14.10.4
  16. Upgrade

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

    Fixed in 14.10.4
  17. Upgrade

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

    Fixed in 14.10.4
  18. Upgrade

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

    Fixed in 14.10.4
  19. Upgrade

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

    Fixed in 14.10.4
  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 ImageMagick to a version that resolves this vulnerability.

    Fixed in 7.1.2-16
  22. Upgrade

    Upgrade ImageMagick to a version that resolves this vulnerability.

    Fixed in 6.9.13-41

Event History

Mar 9, 2026
CVE Published
via MITRE·09:40 PM
Data Sourced
via MITRE·09:40 PM
DescriptionSeverityWeakness
Data Sourced
via Red Hat·10:02 PM
DescriptionSeverityAffected Software
Mar 10, 2026
Data Sourced
via NVD·07:43 AM
DescriptionSeverityWeaknessAffected Software
Mar 12, 2026
Advisory Published
via GitHub·02:12 PM
Data Sourced
via GitHub·02:12 PM
DescriptionSeverityWeaknessAffected Software
Jun 25, 2026
Data Sourced
via Launchpad·04:26 PM
Description
Jun 28, 2026
Data Sourced
via Ubuntu·04:28 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Debian·04:29 PM
DescriptionAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2026-28691?

CVE-2026-28691 is considered a high severity vulnerability due to the potential for exploitation leading to application crashes.

2

How do I fix CVE-2026-28691?

To fix CVE-2026-28691, update ImageMagick to versions 7.1.2-16 or 6.9.13-41 or later.

3

What types of systems are affected by CVE-2026-28691?

CVE-2026-28691 affects systems running older versions of ImageMagick prior to the specified patched versions.

4

What does CVE-2026-28691 exploit specifically?

CVE-2026-28691 exploits an uninitialized pointer dereference in the JBIG decoder of ImageMagick.

5

Is CVE-2026-28691 easy to exploit?

Yes, CVE-2026-28691 can be relatively easy to exploit given the right conditions and lacks adequate input validation.

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