Format string vulnerability in the a_Interface_msg function in Dillo before 0.8.3-r4 allows remote attackers to execute arbitrary code via format string specifiers in a web page.

Centrinity First Class Internet Services 5.50 allows for the circumventing of the default 'spam' filters via the presence of '<@>' in the 'From:' field, which allows remote attackers to send spoofed email with the identity of local users.

Telnet allows a remote client to specify environment variables including LD_LIBRARY_PATH, allowing an attacker to bypass the normal system libraries and gain root access.