telnetd.exe in Pragma TelnetServer 7.0.4.589 allows remote attackers to cause a denial of service (process crash and resource exhaustion) via a crafted TELOPT PRAGMA LOGON telnet option, which triggers a NULL pointer dereference.
Cross-site scripting (XSS) vulnerability in Pragma Systems Telnetserver 6.0 allows remote attackers to inject arbitrary web script or HTML, and hide activities in log files, via a "<!--" (HTML comment) in a session.