CVE-2021-21967

MEDIUM

Sealevel Seaconnect 370w Firmware - Buffer Overflow

Title source: rule

Description

An out-of-bounds write vulnerability exists in the OTA update task functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted MQTT payload can lead to denial of service. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.

References (1)

Core 1

Core References

Exploit, Third Party Advisory x_refsource_misc

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1394

Scores

CVSS v3 5.9

EPSS 0.0030

EPSS Percentile 52.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-120

Status published

Products (1)

sealevel/seaconnect_370w_firmware 1.3.34

Published Apr 14, 2022

Tracked Since Feb 18, 2026