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Vulnerabilities & PatchesEmerging1 sourceSep 1, 2026 · 12:38via BleepingComputer

Nearly 22,000 Microsoft Exchange servers vulnerable to hijack attacks

Brief

Nearly 22,000 Microsoft Exchange servers exposed online remain unpatched against a high-severity authentication bypass vulnerability that allows attackers to hijack all user mailboxes. [... ]

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Vulnerabilities & PatchesMicrosoft