Netgear SSL312 PROSAFE SSL VPN-Concentrator 25 - Error Page Cross-Site Scripting

source: https://www.securityfocus.com/bid/26073/info

NETGEAR ProSafe SSL VPN Concentrator 25-SSL312 is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input.

Exploiting this vulnerability may allow an attacker to perform cross-site scripting attacks on unsuspecting users in the context of the affected website. As a result, the attacker may be able to steal cookie-based authentication credentials and to launch other attacks. 

http://www.example.com/cgi-bin/welcome/XYZ?err=[xss]