AUGUST 4, 2026
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Case File

CVE-2021-21971

MEDIUM · CVSS 5.9 EPSS 0.70%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-02-04 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.9. See the original NVD description below for full technical details.

CVE
CVE-2021-21971
Severity
MEDIUM
CVSS
5.9
EPSS
0.70%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)