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.

Ein Proof-of-Concept-Exploit für eine hochriskante Exchange-Lücke ist öffentlich. 85 Prozent der On-Premises-Server sind anfällig.

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