Exiv2::isoSpeed in easyaccess.cpp in Exiv2 v0.27-RC2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted file.
https://github.com/Exiv2/exiv2/issues/561
https://access.redhat.com/errata/RHSA-2019:2101
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00009.html