A buffer overflow vulnerability in the streaming server provided by hisilicon in HI3516 models allows an unauthenticated attacker to remotely run arbitrary code by sending a special RTSP over HTTP packet. The vulnerability was found in many cameras using hisilicon's hardware and software, as demonstrated by TENVIS cameras 1.3.3.3, 1.2.7.2, 1.2.1.4, 7.1.20.1.2, and 13.1.1.1.7.2; FDT FD7902 11.3.14.1.3 and 10.3.14.1.3; FOSCAM cameras 3.2.1.1.1_0815 and 3.2.2.2.1_0815; and Dericam cameras V11.3.8.1.12.