CVE-2020-25663

A call to ConformPixelInfo() in the SetImageAlphaChannel() routine of /MagickCore/channel.c caused a subsequent heap-use-after-free or heap-buffer-overflow READ when GetPixelRed() or GetPixelBlue() was called. This could occur if an attacker is able to submit a malicious image file to be processed by ImageMagick and could lead to denial of service. It likely would not lead to anything further because the memory is used as pixel data and not e.g. a function pointer. This flaw affects ImageMagick versions prior to 7.0.9-0.

• CWE-416

• https://bugzilla.redhat.com/show_bug.cgi?id=1891601Issue Tracking, Patch, Third Party Advisory
• https://github.com/ImageMagick/ImageMagick/issues/1723Exploit, Third Party Advisory
• https://github.com/ImageMagick/ImageMagick/issues/1723#issuecomment-718275153Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1891601Issue Tracking, Patch, Third Party Advisory
• https://github.com/ImageMagick/ImageMagick/issues/1723Exploit, Third Party Advisory
• https://github.com/ImageMagick/ImageMagick/issues/1723#issuecomment-718275153Third Party Advisory

Published

Dec 8, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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