Cyber Intelligence

Nearly 22,000 Microsoft Exchange servers vulnerable to hijack attacks

Medium Severity Global
Date Occurred Sep 01, 2026 12:38 UTC
Event Type Cyber Intelligence
Source BleepingComputer
Recorded Sep 01, 2026
Full Description

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. [...]

Original Source
https://www.bleepingcomputer.com/news/security/nearly-22-000-microsoft-exchange-servers-vulnerable-to-hijack-attacks/
Event Metadata
  • ID #28117
  • Type Cyber Intelligence
  • Region Global
  • Severity Medium
  • Indexed Sep 01, 2026
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