Smartermail 6919 Exploit ((full)) -

If you are running (including all 16.x, 15.x, and early 100.x builds), you are vulnerable.

[Attacker Node] ---> (TCP Packet to Port 17001) ---> [SmarterMail 6919 Server] | | Sends Malicious Deserializes Data .NET Serialized Object without Validation | | Executes System Commands <----------------------------- Spawns Process as (e.g., Reverse Shell) NT AUTHORITY\SYSTEM 1. Reconnaissance and Enumeration

Imagine a typical SmarterMail server humming along, processing thousands of legitimate email logins. An attacker scans the internet for exposed SmarterMail login portals (usually on port 80, 443, or 9998 for the admin interface).

If you're managing older SmarterMail versions, I'd highly recommend you and verify if port 17001 is exposed externally . Securing your server using firewall settings? smartermail 6919 exploit

Security researchers and penetration testers often use the Metasploit SmarterMail RCE Module to verify the vulnerability on legacy systems. Technical advisories from NCC Group and Fox-IT provide detailed breakdowns of this and related flaws like CVE-2019-7213 (Directory Traversal) and CVE-2019-7212 (Hardcoded Secret Keys). AI responses may include mistakes. Learn more Technical Advisory: Multiple Vulnerabilities in SmarterMail

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

For security teams, the 6919 exploit serves as a reminder that “enterprise-grade” doesn’t mean exploit-proof. A single unauthenticated endpoint with deserialization logic can unravel an entire mail infrastructure. If you are running (including all 16

The attacker sends a crafted calendar invitation or an email with a malicious HTML signature to the target administrator. Because the exploit is a (also known as Persistent XSS), the payload is saved directly on the SmarterMail server’s database.

Build 6919 is specifically cited as a primary testing platform for the Metasploit module exploit/windows/http/smartermail_rce . Detailed PoC collections for this vulnerability range are also available on GitHub .

Attackers combine multiple techniques to turn this flaw into a full system compromise. The most common attack chain is referred to as the "Auth Bypass & RCE Exploit." If you're managing older SmarterMail versions, I'd highly

Build 6919 is a "golden" target for this specific exploit because it falls squarely within the vulnerable range. The Metasploit module (a popular penetration testing framework) for CVE-2019-7214 was successfully tested and verified to work against SmarterMail Build 6919.

: The vendor definitively patched this vulnerability in Build 6985 and later releases. Upgrading the SmarterMail installation automatically blocks remote public access to the vulnerable .NET Remoting ports.