CVE-2025-55212: ImageMagick affected by divide-by-zero in ThumbnailImage via montage -geometry ":" leads to crash
(updated )
Passing a geometry string containing only a colon (":") to montage -geometry leads GetGeometry() to set width/height to 0. Later, ThumbnailImage() divides by these zero dimensions, triggering a crash (SIGFPE/abort), resulting in a denial of service.
References
- github.com/ImageMagick/ImageMagick
- github.com/ImageMagick/ImageMagick/blob/0ba1b587be17543b664f7ad538e9e51e0da59d17/MagickCore/geometry.c
- github.com/ImageMagick/ImageMagick/blob/0ba1b587be17543b664f7ad538e9e51e0da59d17/MagickCore/resize.c
- github.com/ImageMagick/ImageMagick/commit/5f0bcf986b8b5e90567750d31a37af502b73f2af
- github.com/ImageMagick/ImageMagick/security/advisories/GHSA-fh55-q5pj-pxgw
- github.com/advisories/GHSA-fh55-q5pj-pxgw
- github.com/dlemstra/Magick.NET/releases/tag/14.8.1
- lists.debian.org/debian-lts-announce/2025/09/msg00012.html
- nvd.nist.gov/vuln/detail/CVE-2025-55212
Code Behaviors & Features
Detect and mitigate CVE-2025-55212 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →