Cisco Wireless LAN Controller HTML Help Cross-Site Scripting Vulnerability

A vulnerability in the HTML help system of Cisco Wireless LAN Controller (WLC) devices could allow an unauthenticated, remote attacker conduct cross-site scripting attacks.

An unauthenticated, remote attacker who can convince a user of an affected system to follow a malicious link or visit an attacker-controlled web page could execute arbitrary HTML or script code in the security context of the affected site.

Cisco has confirmed the vulnerability; however, software updates are not available.

To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link.

Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.