Security researcher accidentally discovers Windows 7 and Windows Server 2008 zero-day

A French security researcher has accidentally discovered a zero-day vulnerability that impacts the Windows 7 and Windows Server 2008 R2 operating systems while working on an update to a Windows security tool.
Read more: https://www.zdnet.com/article/security-researcher-accidentally-discloses-windows-7-and-windows-server-2008-zero-day/?source=Snapzu