Microsoft Exchange users are urged to mitigate a zero-day vulnerability that CISA has confirmed is under active exploitation.

Microsoft warns of a new zero-day vulnerability that leaves Exchange open to hackers.

Microsoft Exchange has now joined Windows 11 as Pwn2Own zero-day hackers continue to successfully attack the tech giant’s ...

Microsoft confirmed on May 14 that CVE-2026-42897 — a cross-site scripting flaw in the Outlook Web Access component of Exchange Server 2016, 2019, and Subscription Edition — is under active ...

Microsoft has disclosed a new security vulnerability impacting on-premise versions of Exchange Server that it said has come ...

On Thursday, Microsoft shared mitigations for a high-severity Exchange Server vulnerability exploited in attacks that allow ...

Microsoft warned Exchange Server customers about critical OWA vulnerability CVE-2026-42897 affecting on-premises deployments.

A newly discovered zero-day vulnerability in Microsoft Exchange Server has experts declaring an emergency and urging CSOs to ...

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Active Microsoft Exchange zero-day leaves organisations exposed By Nicola Mawson, Contributing journalistJohannesburg, 19 May 2026An exploit in on-premises Microsoft Exchange servers has already been ...

The zero-day vulnerability affects on-premises installations for all versions of Exchange Server 2016, 2019 and Subscription ...

The emergency patches for the recently disclosed critical vulnerabilities in Microsoft Exchange email server did not come soon enough and organizations had little time to prepare before en masse ...