CVE-2021-21960: Sealevel Seaconnect 370w Firmware

Critical severity, CVSS 10.0. EPSS: 2.6% chance of exploitation in the next 30 days.

A stack-based buffer overflow vulnerability exists in both the LLMNR functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted network packet can lead to remote code execution. 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.