VULNERABILITY INTELLIGENCE

CVE-2021-21962

CVSS score8.1 HIGH
EPSS probability2.01%
CISA KEVNot currently listed
Published2022-02-04
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • talos-cna@cisco.com: CWE-122
  • nvd@nist.gov: CWE-787

Primary references