This indicates an attack attempt to exploit an Information Disclosure Vulnerability in VIVOTEK Network Cameras.
The vulnerability is due to an error in the vulnerable application when handling a maliciously crafted request. An attacker can exploit this to access arbitrary files on the affected machine via a crafted request.
VIVOTEK Network Camera with firmware IB8369-VVTK-0102A
VIVOTEK Network Camera with firmware FD8164-VVTK-0200B
VIVOTEK Network Camera with firmware FD816BA-VVTK-010101
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Refer to the vendor's advisory for updates: