~/article/nearly-22-000-microsoft-exchange-servers-vulnerable-to-hijack-attacks-1iuosz

medium2026-09-01 12:38 UTCSource: BleepingComputer

Nearly 22,000 Microsoft Exchange servers vulnerable to hijack attacks

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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Summary written for cymesh.dev. The full article lives at BleepingComputer.

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