Microsoft Exchange Flaw Lets Authenticated Attackers Read Other Users' Mailboxes

Reported by The Hacker News ([email protected] (The Hacker News))

Summary by Cyber Security News5 Oct 2026, 18:21 CET

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Microsoft has released out-of-band security updates to address a high-severity flaw in Microsoft Exchange Server that could allow an attacker to escalate privileges under certain conditions. The vulnerability, tracked as CVE-2026-96940, is rated 8.8 on the CVSS scoring system. "Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a

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