ImageMagick has a heap overflow caused by integer overflow/wraparound in viff encoder on 32-bit builds
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, the viff encoder contains an integer truncation/wraparound issue on 32-bit builds that could trigger an out of bounds heap write, potentially causing a crash. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | Magick.NET-Q16-AnyCPU | < 14.12.0 | 14.12.0 |
| .NET (NuGet) | Magick.NET-Q16-HDRI-AnyCPU | < 14.12.0 | 14.12.0 |
| .NET (NuGet) | Magick.NET-Q16-HDRI-x86 | < 14.12.0 | 14.12.0 |
| .NET (NuGet) | Magick.NET-Q16-x86 | < 14.12.0 | 14.12.0 |
| .NET (NuGet) | Magick.NET-Q8-AnyCPU | < 14.12.0 | 14.12.0 |
| .NET (NuGet) | Magick.NET-Q8-x86 | < 14.12.0 | 14.12.0 |
References
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-v67w-737x-v2c9
- https://nvd.nist.gov/vuln/detail/CVE-2026-33900
- https://github.com/ImageMagick/ImageMagick/commit/d27b840a61b322419a66d0d192ff56d52498148d
- https://github.com/ImageMagick/ImageMagick
- https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19
- https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-190- Platform
- .NET (NuGet)
- Package
Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU, Magick.NET-Q16-HDRI-x86- Disclosed
- 13.04.2026
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-v67w-737x-v2c9 - CC BY 4.0
Vulnerability history: Magick.NET-Q16-AnyCPU
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 165
- First → latest
- 09.2023 09.2026
- Without a fix
- 0
- Exploited in attacks
- 1
Severity breakdown
- High 27
- Medium 99
- Low 39
Disclosures per year
- 2023: 1
- 2024: 0
- 2025: 15
- 2026: 149
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ImageMagick has a heap overflow caused by integer overflow/wraparound in viff encoder on 32-bit builds this entry
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