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    Microsoft Exchange flaw lets attackers read other users' mailboxes●CVE-2026-96940 is an Exchange Server privilege escalation flaw rated CVSS 8.8. An authenticated attacker can potentiallyMmastodonTechnologyCybersecurity226 min ago

    A newly disclosed vulnerability in Microsoft Exchange Server, tracked as CVE-2026-96940, carries a high severity score of 8.8. Security researchers say an authenticated attacker could bypass authorization checks and read other users' mailboxes and attachments within the same on-premises Exchange organisation. The flaw does not allow pre-authentication remote code execution, but experts are warning administrators to review exposure and patch promptly.