CVE-2021-26855

Summary

CVE-2021-26855 is a remote code execution vulnerability affecting Microsoft Exchange Servers. An attacker can exploit this flaw by sending a specially crafted email message to a victim, resulting in arbitrary code execution on the affected system. Successful exploitation allows the attacker to gain control of the targeted Exchange Server, potentially leading to data theft or further attacks. Microsoft released a patch to address this issue, and it is highly recommended that all Exchange Server administrators apply it promptly to secure their environments.

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