This indicates a possible attack against buffer-overflow vulnerability in EvoCam HTTP server.
The vulnerability is due to the vulnerable software's inability to properly process overly long GET requests. An attacker may exploit this to execute arbitrary code or cause denial of service by sending an overly long GET request.
EvoCam 3.6.6 and 3.6.7 are vulnerable; other versions may also be affected.
Denial of service
Currently we are not aware of any official patches or updates.