CVE-2021-21967 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Complete

This CVE is not in the KEV list.

The EPSS score is 0.00296.

Exploitation poc

Automatable no

Technical Impact partial

Vendors	Products
Sealevel	Seaconnect 370w Seaconnect 370w Firmware

Configuration 1 [-]

AND

cpe:2.3:o:sealevel:seaconnect_370w_firmware:1.3.34:*:*:*:*:*:*:*

cpe:2.3:h:sealevel:seaconnect_370w:-:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2021-9138	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.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

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

History

Tue, 15 Apr 2025 19:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: talos

Published: 2022-04-14T19:56:06.861Z

Updated: 2025-04-15T19:08:14.098Z

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

Link: CVE-2021-21967

Vulnrichment

Updated: 2024-08-03T18:30:23.664Z

NVD

Status : Modified

Published: 2022-04-14T20:15:08.650

Modified: 2024-11-21T05:49:20.253

Link: CVE-2021-21967

Redhat

No data.

OpenCVE Enrichment

No data.

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