CVE-2021-21971

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

Score

CVSS 3.1 5.9 Medium

Status

Modified - talos-cna@cisco.com

Published

2022-02-04

Last modified

2025-04-15

Weaknesses

CWE-787

Affected products

• Seaconnect 370w Firmware (Sealevel)

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1406
• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1397