Microsoft on Tuesday released three security updates, two of which address critical flaws in its Exchange e-mail server and third-party software in Windows. Critical vulnerabilities in Microsoft ...

Microsoft’s monthly update included 206 fixes for flaws in everything from Windows to Office to Exchange Server, not to mention three zero-days.

On Monday, Microsoft released the last major update for Exchange Server 2019. The aging Exchange Server is set to lose support on Oct. 14, 2025. This final update (2025 H1 Cumulative Update (CU15) ...

Two of the three bulletins were tagged as "critical," including MS06-019, which patches a flaw in Exchange Server, and MS06-020, which involved the third-party product, Adobe's Flash Player. "This ...

Microsoft will disable OWA Light by default in the August 2026 Exchange Server update, redirecting users to standard Outlook ...

Update 26.3.2024: While not on the same scale as 2021's Microsoft Exchange Server hack (see below this update), security problems impacting Exchange Server have reemerged. In March 2024's monthly ...

A new ransomware gang known as LockFile encrypts Windows domains after hacking into Microsoft Exchange servers using the recently disclosed ProxyShell vulnerabilities. ProxyShell is the name of an ...