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Apr 23 2026 CISA orders feds to patch BlueHammer flaw exploited as zero-day

Source

CISA has ordered U.S. federal agencies to patch a Microsoft Defender privilege escalation flaw (dubbed BlueHammer) that has been exploited in zero-day attacks. [...]

Posted by Sergiu Gatlan on Thu 23 April 2026 in BleepingComputer.

Tags: Security, Microsoft.

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