New Microsoft Exchange Server Vulnerability Allows Unauthorized Admin Privilege Escalation

Microsoft has disclosed a high-severity security vulnerability affecting Exchange Server hybrid deployments that could allow attackers with administrative access to escalate privileges and potentially compromise an organization’s entire cloud and on-premises infrastructure. The vulnerability, tracked as CVE-2025-53786, was announced on August 6, 2025, prompting immediate action from cybersecurity agencies worldwide. Vulnerability Overview The Microsoft Exchange Server […]

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