Critical Exchange Server zero-day under active exploitation

BleepingComputer reports that organizations have been advised by Microsoft regarding the active exploitation of a critical Exchange Server zero-day flaw, tracked as CVE-2024-21410, prior to it being remediated as part of this month's Patch Tuesday.

bleepingcomputer critical cve cve-2024-21410 email security exchange exchange server exploitation flaw microsoft networking organizations patch patch tuesday reports server tuesday under zero-day zero-day flaw