A reflected Cross-Site-Scripting (XSS) vulnerability has been identified in Siemens PLM Software TEAMCENTER (V9.1.2.5). If a user visits the login portal through the URL crafted by the attacker, the attacker can insert html/javascript and thus alter/rewrite the login portal page. Siemens PLM Software TEAMCENTER V9.1.3 and newer are not affected.