The remote host is vulnerable to a Cross-Site Scripting (XSS) attack.
The remote host is running phpSysInfo, a PHP script that monitors and reports on local *nix system resources utilization. This version of phpSysInfo is vulnerable to a remote Cross-Site Scripting attack. An attacker exploiting this flaw would need to be able to convince a user to browse a malicious URI. Successful exploitation could lead to a loss of integrity as code would be executed by the browser within the security context of the vulnerable web site.
Upgrade to version 2.5 or higher.