CVE-2021-21959

HIGH

Sealevel SeaConnect 370W v1.3.34 - Improper Certificate Validation in MQTTS

Title source: llm

Description

A misconfiguration exists in the MQTTS functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. This misconfiguration significantly simplifies a man-in-the-middle attack, which directly leads to control of device functionality.

References (1)

Core 1

Core References

Exploit, Third Party Advisory x_refsource_misc

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1388

Scores

CVSS v3 8.1

EPSS 0.0083

EPSS Percentile 52.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-295

Status published

Products (1)

sealevel/seaconnect_370w_firmware 1.3.34

Published Feb 04, 2022

Tracked Since Feb 18, 2026