CISA Issues Urgent Directive: Federal Agencies Must Patch Critical Exchange Flaw by Monday
CISA Issues Urgent Directive: Federal Agencies Must Patch Critical Exchange Flaw by Monday The Cybersecurity and Infrastructure Security Agency (CISA) has issued an emergency directive, ordering all Federal Civilian Executive Branch (FCEB) agencies to immediately address a critical Microsoft Exchange hybrid vulnerability, CVE-2025-53786. Agencies face a strict deadline of Monday, August 11, 2025, at 9:00 AM ET to implement the necessary mitigations. This severe flaw allows attackers with administrative access to on-premises Exchange servers to move laterally into Microsoft cloud…