ZDI-CAN-18333 aka ProxyNotShell— the story of the claimed zero day in Microsoft Exchange

https://doublepulsar.com/proxynotshell-the-story-of-the-claimed-zero-day-in-microsoft-exchange-5c63d963a9e9

https://gteltsc.vn/blog/warning-new-attack-campaign-utilized-a-new-0day-rce-vulnerability-on-microsoft-exchange-server-12715.html

https://twitter.com/GossiTheDog/status/1575580072961982464