A command injection vulnerability in the web server of some Hikvision product. Due to the insufficient input validation, attacker can exploit the vulnerability to launch a command injection attack by sending some messages with malicious commands.
https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdf
https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/
http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.html