A buffer overflow exists in the timestart parameter of the ConfigAdvideo function, enabling an attacker to crash the application by sending specially crafted input. The flaw is a classic buffer overflow, which is mitigated by properly bounds‑checking input, and does not provide remote code execution or privilege escalation.

The vulnerability affects the UTT Aggressive HiPER 810G firmware version 3v1.7.7-171114. No other vendor or product versions are identified.

The EPSS score is not available, and the issue is not listed in the CISA KEV catalog, so its exploitation likelihood is uncertain. The attack vector is inferred to be local or remote depending on how the ConfigAdvideo interface is exposed; an attacker must be able to send crafted configuration data to trigger the overflow. The risk is primarily availability loss and potential repeated crashes, which could be critical in environments where continuous service is required.