CISA warns high-severity Windows SMB flaw now exploited in attacks, so update now

TechRadar•Wednesday, October 22, 2025 at 2:27:00 PM

The Cybersecurity and Infrastructure Security Agency (CISA) has issued a warning about a high-severity vulnerability in Windows' Server Message Block (SMB) protocol that is currently being exploited in cyberattacks. Users of Windows 10, 11, and Server are urged to update their systems immediately to safeguard against potential breaches. This is crucial as such vulnerabilities can lead to significant data loss and security risks, making timely updates essential for protecting personal and organizational information.

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