A vulnerability in the web framework code of Cisco Prime Optical could allow an unauthenticated, remote attacker to conduct a reflected cross-site scripting (XSS) attack. The vulnerability is due to insufficient validation of a parameter. An attacker could exploit this vulnerability by persuading a user to access a malicious link. An exploit could allow the attacker to run arbitrary scripts in the context of the user's browser. Cisco has confirmed the vulnerability in a security notice; however, software updates are not available. To exploit the vulnerability, the attacker may provide a link that directs an authenticated 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.