CVE-2026-33900
MEDIUM5.9EPSS 0.02%ImageMagick has a heap overflow caused by integer overflow/wraparound in viff encoder on 32-bit builds
Published: 4/13/2026Modified: 5/17/2026
Description
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 packages (7)
- Debian/imagemagickfrom 0, < 8:6.9.11.60+dfsg-1.3+deb11u12
- NuGet/Magick.NET-Q16-AnyCPUfrom 0, < 14.12.0
- NuGet/Magick.NET-Q16-HDRI-AnyCPUfrom 0, < 14.12.0
- NuGet/Magick.NET-Q16-HDRI-x86from 0, < 14.12.0
- NuGet/Magick.NET-Q16-x86from 0, < 14.12.0
- NuGet/Magick.NET-Q8-AnyCPUfrom 0, < 14.12.0
- NuGet/Magick.NET-Q8-x86from 0, < 14.12.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-33900
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-33900
- PATCHhttps://github.com/ImageMagick/ImageMagick
- WEBhttps://github.com/dlemstra/Magick.NET/releases/tag/14.12.0
- WEBhttps://github.com/ImageMagick/ImageMagick/commit/d27b840a61b322419a66d0d192ff56d52498148d
- WEBhttps://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19
- WEBhttps://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-v67w-737x-v2c9