Medium severity5.9NVD Advisory· Published Feb 4, 2022· Updated Jun 17, 2026
CVE-2021-21971
CVE-2021-21971
Description
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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Affected products
2- Sealevel Systems, Inc./SeaConnect 370Wdescription
- Range: = 1.3.34
Patches
Vulnerability mechanics
References
2- talosintelligence.com/vulnerability_reports/TALOS-2021-1397nvdExploitTechnical DescriptionThird Party Advisory
- talosintelligence.com/vulnerability_reports/TALOS-2021-1406nvdNot ApplicableThird Party Advisory
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