CVE-2021-34523

Summary

CVE-2021-34523 is an elevation of privilege vulnerability affecting Microsoft Exchange Servers. Hackers can exploit this vulnerability to gain system-level access, potentially leading to significant data breaches or system damage. The issue is caused by improperly handling certain file uploads in the Exchange Unified Messaging service. Organizations using Exchange Server versions 2010, 2013, 2016, and 2019 are at risk and should apply the available Microsoft patches promptly to mitigate this threat. Successful exploitation may enable attackers to install malware, steal sensitive data, or carry out further destructive actions on the affected systems.

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