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CISA warns of critical pre-auth RCE flaw in MikroTik RouterOS

September 30, 2026 · BleepingComputer · Severity: CRITICAL

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) is warning of a new critical vulnerability in MikroTik RouterOS that could lead to remote code execution or cause a denial-of-service condition.

Key Takeaways

  • According to BleepingComputer, this development warrants attention from teams monitoring the evolving threat landscape.
  • Given the CRITICAL severity, organizations should prioritize remediation in their vulnerability management workflow.
  • Security teams should review their exposure and implement appropriate defensive controls.
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