A buffer overflow exists in the timestart parameter of the ConfigAdvideo function of UTT Aggressive HiPER 810G firmware 3v1.7.7-171114. The overflow allows an attacker to send crafted input that can terminate the function, causing the system to become unresponsive. This vulnerability falls under CWE‑120, reflecting a classic stack-based buffer overflow that directly impacts availability.

The affected system is the UTT Aggressive HiPER 810G hardware running firmware version 3v1.7.7-171114. No other vendors or product versions are listed.

The CVSS score of 4.5 indicates a moderate risk, and the EPSS score of less than 1% suggests that exploitation of this flaw is currently unlikely to be widely automated. The vulnerability is not recorded in the CISA Known Exploited Vulnerabilities catalog. Based on the description, the likely attack vector involves sending a malicious ConfigAdvideo command—either locally or over a network interface that accepts this function. The exact method of delivery is inferred, as the official advisory does not specify the network or local interface used.