NGSSoftware Insight Security Research Advisory #NISR07052003A – SLMail 5.1.0.4420 suffers from multiple remotely exploitable buffer overflows in its SMTP engine, poppasswd and pop3 server.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/31111/SLMail.txt
Source: https://packetstormsecurity.com/files/31111/SLMail.txt.html