Integer overflow in Imagemagick
CVE-2026-33900
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Imagemagick — versions < 6.9.13-44, < 7.1.2-19
Weakness classification (CWE)
References
- github.com/ImageMagick/ImageMagick/security/advisories/GHSA-v67w-737x-v2c9 (Vendor Advisory)
- github.com/ImageMagick/ImageMagick/commit/d27b840a61b322419a66d0d192ff56d524981… (Patch)
- github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19 (Release Notes)
- github.com/dlemstra/Magick.NET/releases/tag/14.12.0 (Release Notes)
Frequently asked questions
- What is CVE-2026-33900?
- CVE-2026-33900 is a medium-severity vulnerability in Imagemagick, classified under Integer Overflow or Wraparound. CVSS score: 5.9/10. Published 2026-04-13.
- How severe is CVE-2026-33900?
- Medium severity. CVSS v3 base score is 5.9 out of 10.