CVE-2021-26855 (Exchange Server)

CVE-2021-26855 is a serious security vulnerability affecting Microsoft Exchange Server, a software used by organizations for email and communication. This flaw allows attackers to send malicious requests that can give them unauthorized access to servers. It works due to weaknesses in how Exchange handles authentication. If exploited, this could lead to data theft or manipulation of email accounts, putting sensitive information at risk. Because of its severity, it's crucial for organizations using Exchange to apply security updates provided by Microsoft to protect their systems.