The Hacker News - Microsoft Discloses Exchange Server Flaw Enabling Silent Cloud Access in Hybrid Setups

Microsoft has released an advisory for a high-severity security flaw affecting on-premise versions of Exchange Server that could allow an attacker to gain elevated privileges under certain conditions. The vulnerability, tracked as CVE-2025-53786, carries a CVSS score of 8.0. Dirk-jan Mollema with Outsider Security has been acknowledged for reporting the bug. "In an Exchange hybrid deployment, an

from The Hacker News https://thehackernews.com/2025/08/microsoft-discloses-exchange-server.html

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