SAP NetWeaver AS Java, versions - 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, Start Page allows an unauthenticated remote attacker to redirect users to a malicious site due to insufficient reverse tabnabbing URL validation. The attacker could execute phishing attacks to steal credentials of the victim or to redirect users to untrusted web pages containing malware or similar malicious exploits.