CVE-2021-20312

A flaw was found in ImageMagick in versions 7.0.11, where an integer overflow in WriteTHUMBNAILImage of coders/thumbnail.c may trigger undefined behavior via a crafted image file that is submitted by an attacker and processed by an application using ImageMagick. The highest threat from this vulnerability is to system availability.

• CWE-190

• https://bugzilla.redhat.com/show_bug.cgi?id=1946742Issue Tracking, Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/06/msg00000.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2023/05/msg00020.html
• https://bugzilla.redhat.com/show_bug.cgi?id=1946742Issue Tracking, Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/06/msg00000.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2023/05/msg00020.html

Published

May 11, 2021

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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