An Information Disclosure vulnerability exists due to insufficient validation of authentication cookies for the RTSP session in D-Link DCS-5635 1.01, DCS-1100L 1.04, DCS-1130L 1.04, DCS-1100 1.03/1.04_US, DCS-1130 1.03/1.04_US , DCS-2102 1.05_RU/1.06/1.06_FR/1.05_TESCO, DCS-2121 1.05_RU/1.06/1.06_FR/1.05_TESCO, DCS-3410 1.02, DCS-5230 1.02, DCS-5230L 1.02, DCS-6410 1.0, DCS-7410 1.0, DCS-7510 1.0, and WCS-1100 1.02, which could let a malicious user obtain unauthorized access to video streams.