CVE-2021-21964 HIGH

CVE-2021-21964

Vendor N/A
Product Sealevel
Weakness CWE-284
Published February 4, 2022
Last update April 15, 2025

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 4, 2022 CVE published
April 15, 2025 Record updated