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Active Microsoft Exchange zero-day leaves organisations exposed
Hackers are already exploiting a cross-site scripting flaw in Microsoft Exchange Server, leaving organisations running on-premises deployments scrambling.
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forbes.com
Microsoft Confirms Active 0-Day Exploit—Check Emergency Mitigation
Microsoft Exchange users are urged to mitigate a zero-day vulnerability that CISA has confirmed is under active exploitation.
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darkreading.com
Microsoft Exchange Zero-Day Under Attack, No Patch Available
CVE-2026-42897 stems from a cross-site scripting (XSS) vulnerability and can allow an attacker to compromise Outlook Web Access (OWA) mailboxes.
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itweb.co.za
Active Microsoft Exchange zero-day leaves organisations exposed
Hackers are already exploiting a cross-site scripting flaw in Microsoft Exchange Server, leaving organisations running on-premises deployments scrambling.