From gbhackers.com
USCYBERCOM published an alert that hackers were exploiting the CVE-2017-11774 Microsoft Outlook Security Vulnerability to deliver malware using an HTTPS domain.
Microsoft already patched the vulnerability in 2017 and the USCYBERCOM alert refers to the ongoing campaign that exploiting CVE-2017-11774. Users are advised to ensure that they have patched the vulnerability.