2021/08/12 : Lawrence Abrams explains how "Orange Tsai at a Black Hat talk about recent Microsoft Exchange vulnerabilities he discovered when targeting the Microsoft Exchange Client Access Service (CAS) attack surface. After watching the talk, security researchers PeterJson and Nguyen Jang published more detailed technical information about successfully reproducing the ProxyShell exploit." Then several hackers used the threat.
Critical Commentary
2021/08/12 : Lawrence Abrams explains how "Orange Tsai at a Black Hat talk about recent Microsoft Exchange vulnerabilities he discovered when targeting the Microsoft Exchange Client Access Service (CAS) attack surface.
After watching the talk, security researchers PeterJson and Nguyen Jang published more detailed technical information about successfully reproducing the ProxyShell exploit."
Then several hackers used the threat.
This event shows full disclosure is still alive.