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.

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-9142 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 09 Nov 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: talos

Published:

Updated: 2025-04-15T19:11:19.375Z

Reserved: 2021-01-04T00:00:00.000Z

Link: CVE-2021-21971

cve-icon Vulnrichment

Updated: 2024-08-03T18:30:23.656Z

cve-icon NVD

Status : Modified

Published: 2022-02-04T23:15:10.830

Modified: 2026-06-17T03:36:28.500

Link: CVE-2021-21971

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses