Recently all Hikvision and Hikvision OEM brands (Such as LTS and OCULUR) has been affected by the backdoor vulnerability. Hikvision's official notice states the backdoor issue exists in devices with older firmware (firmware released before 2017). The back door is removed in the firmwares released after 2017.
For Privilege-Escalating Vulnerability in Certain Hikvision IP Cameras please click the link below to update your receivers to the latest firmware.
LTS (Hikvision OEM)
First of all users have to create a stronger password ( at least 8 digits combined with letters and numbers) instead of using default password (12345 or lts12345).
Updating firmware will help to solve recent issues.
Unzip the file to a USB drive and plug to the DVR/NVR, Menu-Maintenance- upgrade, and select the firmware file.
Or you can upgrade the firmware remotely by login to the device by web browser. configuration-system-maintenance
OCULUR (Hikvision OEM)
Update your NVR by downloading the latest firmware. Please click the link below to update your OCULUR firmware . (Same firmware update with Hinovision)