ImageMagick 7.0.8-50 Q16 has a heap-based buffer over-read at MagickCore/threshold.c in AdaptiveThresholdImage because a height of zero is mishandled.
Created ImageMagick tracking bugs for this issue:
Affects: fedora-all [bug 1730597]
This flaw is related similar to CVE-2019-13295.
This issue has been addressed in the following products:
Red Hat Enterprise Linux 7
Via RHSA-2020:1180 https://access.redhat.com/errata/RHSA-2020:1180
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):