The remote host is missing an update to mailman announced via advisory DSA 436-2.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20436-2

Several vulnerabilities have been fixed in the mailman package: - CVE-2003-0038 - potential cross-site scripting via certain CGI parameters (not known to be exploitable in this version) - CVE-2003-0965 - cross-site scripting in the administrative interface - CVE-2003-0991 - certain malformed email commands could cause the mailman process to crash The cross-site scripting vulnerabilities could allow an attacker to perform administrative operations without authorization, by stealing a session cookie. In the process of fixing these vulnerabilities for DSA 436-1, a bug was introduced which could cause mailman to crash on certain malformed messages. For the current stable distribution (woody) this problem has been fixed in version 2.0.11-1woody8. The update for the unstable distribution did not share the bug introduced in DSA 436-1. We recommend that you update your mailman package.