This is a whitepaper along with a proof of concept eml file that demonstrates an out-of-bounds read on Outlook 2019 version 16.0.12624.20424. NIST references this issue as simply an information disclosure.
SHA-256 | d7cbdf78b8d88b5ef4f17ae322717c6adec1d335f3eddae9fc75f883c66bbc76
