Provide references for CVE-2021-33889.
Where can I find more information about CVE-2021-33889?
References are available at: https://github.com/openthread/wpantund/releases, https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0019/FEYE-2021-0019.md, https://github.com/openthread/wpantund/issues/502.