Organizations running Microsoft Exchange Server face an active threat after a zero-day vulnerability was confirmed to allow attackers to silently take over inboxes, rewrite email content, and steal ...

Microsoft recently acknowledged a vulnerability affecting its email and calendar service Exchange that could allow an attacker to gain significant control over particular organizations' email servers ...

Microsoft on Thursday disclosed a zero-day vulnerability in Exchange that's under active exploitation, but four days later customers are still awaiting a patch. The zero-day, tracked as CVE-2026-42897 ...

A newly discovered zero-day vulnerability in Microsoft Exchange Server has experts declaring an emergency and urging CSOs to think about the need to abandon on-premises email solutions. “Because it’s ...

Microsoft released July 2026 Exchange Server security updates, including a permanent fix for the Critical CVE-2026-42897 ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Microsoft confirms Exchange zero-day, CISA warns it's under active exploitation. Updated May ...

Microsoft's November security updates, released today, contained fixes for 55 vulnerabilities, including six zero-day flaws — two of which are being currently exploited. But according to at least one ...

Parts of the federal enterprise are likely susceptible to the flaw that allows hackers to hijack on-premises versions of Active Directory. CISA plans to release an emergency directive on Thursday, ...

Yesterday was July’s Patch Tuesday and Microsoft released security updates to address 570 new security vulnerabilities. If ...