Email Firewall SMB 
CATO Networks
MARCH 22, 2023
An attacker can craft a.MSG file as a e form of a calendar invite that triggers an authentication attempt over the SMB protocol to an attacker-controlled endpoint without any user interaction. (.MSG MSG is the file format used to represent Outlook elements, such email messages, appointments, contacts, and tasks.)
CATO Networks
MARCH 24, 2020
At the beginning of the month, Microsoft released an advisory and security patch for a serious Windows Server Message Block (SMB) vulnerability called the Windows SMBv3 Client/Server Remote Code Execution Vulnerability (AKA Windows SMBv3 RCE or CVE-2020-0796). Windows SMBv3 RCE isnt the first vulnerability in SMB.
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