Smartermail 6919 Exploit [portable] Jun 2026

An attacker can send specially crafted serialized .NET objects directly to port 17001 via a TCP socket.

The 6919 exploit primarily affects organizations that: smartermail 6919 exploit

Build 6919 is part of SmarterMail version 16.x, which includes several exposed .NET remoting endpoints by default on TCP port 17001 . These endpoints—specifically An attacker can send specially crafted serialized