A mingw-OpenEXR security update has been released for Fedora 33.

SECURITY: Fedora 33 Update: mingw-OpenEXR-2.4.1-4.fc33

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Fedora Update Notification
FEDORA-2021-6af32bfcd2
2021-05-10 01:07:48.522423
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Name : mingw-OpenEXR
Product : Fedora 33
Version : 2.4.1
Release : 4.fc33
URL :   http://www.openexr.com/
Summary : MinGW Windows OpenEXR library
Description :
MinGW Windows OpenEXR library.

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Update Information:

Backport patches for CVE-2021-23169, CVE-2021-26260, CVE-2021-23215
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ChangeLog:

* Sat May 1 2021 Sandro Mani - 2.4.1-4
- Backport patches for CVE-2021-23169, CVE-2021-26260, CVE-2021-23215
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References:

[ 1 ] Bug #1952357 - CVE-2021-26260 mingw-OpenEXR: OpenEXR: Integer-overflow in Imf_2_5::DwaCompressor::initializeBuffers [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1952357
[ 2 ] Bug #1952444 - CVE-2021-23215 mingw-OpenEXR: OpenEXR: Integer-overflow in Imf_2_5::DwaCompressor::initializeBuffers [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1952444
[ 3 ] Bug #1952477 - CVE-2021-23169 mingw-OpenEXR: OpenEXR: Heap-buffer-overflow in Imf_2_5::copyIntoFrameBuffer [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1952477
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-6af32bfcd2' at the command
line. For more information, refer to the dnf documentation available at
  http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
  https://fedoraproject.org/keys