Kremlin Hackers Actively Exploit Critical Microsoft Exchange Server Vulnerability

A maximum-severity vulnerability in Microsoft Exchange Server is being actively exploited by Russian state-sponsored hackers. The flaw is particularly dangerous as it grants attackers persistent access to compromised servers. Notably, this access survives common remediation measures such as credential rotation and full disk re-imaging. The active exploitation by Kremlin-linked threat actors raises urgent concerns for organizations relying on Exchange Server infrastructure.
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