6919 Exploit: Smartermail

: Security researchers confirmed Build 6919 is vulnerable, while Build 6985 effectively mitigated the issue by making port 17001 accessible only locally (127.0.0.1). Exploit-DB Remediation : Immediately upgrade to Build 6985

A WAF can be configured to block common serialization patterns and signatures associated with Ysoserial payloads. 3. Least Privilege smartermail 6919 exploit