New Microsoft Exchange Server Vulnerability Enables Attackers to Gain Admin Privileges

A critical security vulnerability in Microsoft Exchange Server hybrid deployments has been disclosed, allowing attackers with on-premises administrative access to escalate privileges to cloud environments without easily detectable traces. The vulnerability, tracked as CVE-2025-53786, was officially documented by Microsoft on August 6, 2025, following a security researcher’s demonstration at the Black Hat cybersecurity conference. The […]

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