New Microsoft Exchange Server Vulnerability Allows Privilege Escalation to Admin

A significant security flaw, CVE-2025-53786, has been discovered in Microsoft Exchange Server hybrid environments. This flaw could enable attackers with on-premises administrative privileges to escalate their access within connected cloud systems. Publicly disclosed on August 6, 2025, the vulnerability poses a considerable threat to organizations utilizing hybrid Exchange setups. Microsoft and the Cybersecurity and Infrastructure […]

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