High severity · published Apr 13, 2026
CVE-2026-33900
ImageMagick has a Heap overflow caused by integer overflow/wraparound in viff encoder on 32-bit builds
7.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IM
ImageMagick · ImageMagick
< 6.9.13-44; < 7.1.2-19 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33900
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33900
Patch
https://github.com/ImageMagick/ImageMagick/commit/d27b840a61b322419a66d0d192ff56d52498148d
Release Notes
https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19
Vendor Advisory
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-v67w-737x-v2c9
Release Notes
https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0
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