CVE-2026-27799
MEDIUM
GHSA-r99p-5442-q2x2
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Lifecycle Timeline
3Description
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a heap buffer over-read vulnerability exists in the DJVU image format handler. The vulnerability occurs due to integer truncation when calculating the stride (row size) for pixel buffer allocation. The stride calculation overflows a 32-bit signed integer, resulting in an out-of-bounds memory reads. Versions 7.1.2-15 and 6.9.13-40 contain a patch.
Analysis
Heap buffer over-read in ImageMagick and Magick.NET's DJVU image handler allows local attackers to read out-of-bounds memory through integer truncation in stride calculations. An attacker can trigger this vulnerability by supplying a malicious DJVU file, potentially leading to information disclosure or application crashes. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.
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External POC / Exploit Code
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