CVE-2025-55212

Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-28 and 7.1.2-2, 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. This issue has been patched in versions 6.9.13-28 and 7.1.2-2.

Weakness classification

• CWE-369: Divide By Zero

Primary references

• security-advisories@github.com — Product
• security-advisories@github.com — Product
• security-advisories@github.com — Patch
• security-advisories@github.com — Exploit, Vendor Advisory
• security-advisories@github.com — Release Notes
• af854a3a-2127-422b-91ae-364da2661108
• 134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Vendor Advisory