Administrators with hybrid Exchange Server environments are urged by Microsoft and the US Cybersecurity and Infrastructure Security Agency (CISA) to quickly plug a high-severity vulnerability or risk ...
CISA has issued an emergency directive ordering all Federal Civilian Executive Branch (FCEB) agencies to mitigate a critical Microsoft Exchange hybrid vulnerability tracked as CVE-2025-53786 by Monday ...
Microsoft is investigating a major security risk in Exchange Server hybrid deployments that could let attackers gain escalated access within connected Microsoft 365 cloud environments. The ...
A critical vulnerability in Microsoft Exchange Server remains unpatched on nearly 30,000 systems worldwide, raising concerns about potential exploitation in hybrid cloud environments. The ...