Contacted @Teradek about this backdoor in their IP video device firmwares in 2020. They were not interested in it (stopped replying at a point), released an updated firmware in 2021 but without a fix.
Ok, then here is the full disclosure: https://an0n-r0.medium.com/full-disclosure-0-day-rce-backdoor-in-teradek-ip-video-device-firmwares-85a16f346e15
Ok, then here is the full disclosure: https://an0n-r0.medium.com/full-disclosure-0-day-rce-backdoor-in-teradek-ip-video-device-firmwares-85a16f346e15