A buffer overflow exists in the notes field of the formGroupConfig function on the UTT Aggressive HiPER 810G firmware version 3v1.7.7-171114. When an attacker supplies a payload that exceeds the expected length, the overflow can corrupt memory and cause the device to crash or become unresponsive, resulting in a denial‑of‑service condition.

The vulnerability affects UTT Aggressive HiPER 810G units running firmware 3v1.7.7-171114. No other firmware releases are identified in the provided information.

The CVSS score of 4.5 indicates moderate severity. An EPSS score below 1% suggests that widespread exploitation is unlikely. The flaw is not listed in the CISA Known Exploited Vulnerabilities catalog. Exploitation would require delivery of a crafted configuration request to the device, so the attacker likely needs network access to the management interface, and may need authentication depending on device configuration. The vector is inferred to be remote, but the exact mechanism is not detailed.