CVE-2021-21964: Sealevel Seaconnect 370w Firmware

High severity, CVSS 7.4. EPSS: 0.7% chance of exploitation in the next 30 days.

A denial of service vulnerability exists in the Modbus configuration functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. Specially-crafted network packets can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

Affected products

• Sealevel Seaconnect 370w Firmware: version 1.3.34 only

Published 2022-02-04. Last modified 2026-06-17.