In ImageMagick before 6.9.9-0 and 7.x before 7.0.6-1, the ReadOneMNGImage function in coders/png.c has an out-of-bounds read with the MNG CLIP chunk.
https://www.debian.org/security/2017/dsa-4040
https://www.debian.org/security/2017/dsa-4019
https://usn.ubuntu.com/3681-1/
https://security.gentoo.org/glsa/201711-07
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=870109
http://www.securityfocus.com/bid/100494
https://github.com/ImageMagick/ImageMagick/commit/d072ed6aff835c174e856ce3a428163c0da9e8f4
Source: Mitre, NVD
Published: 2017-08-23
Updated: 2025-04-20
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.01551