CVE-2021-21962

HIGH

Sealevel Seaconnect 370w Firmware - Out-of-Bounds Write

Title source: rule
STIX 2.1

Description

A heap-based buffer overflow vulnerability exists in the OTA Update u-download functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A series of specially-crafted MQTT payloads can lead to remote code execution. An attacker must perform a man-in-the-middle attack in order to trigger this vulnerability.

References (1)

Core 1
Core References
Exploit, Third Party Advisory x_refsource_misc
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1390

Scores

CVSS v3 8.1
EPSS 0.0229
EPSS Percentile 84.8%
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 total

Details

CWE
CWE-122 CWE-787
Status published
Products (1)
sealevel/seaconnect_370w_firmware 1.3.34
Published Feb 04, 2022
Tracked Since Feb 18, 2026