What’s Vulnerable › Vulnerabilities

CVE-2021-21968

• Severity: high (CVSS 8.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-04 · updated 2026-06-17
• Weakness: CWE-20

Description

A file 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 arbitrary file overwrite. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.

Affected products

• Sealevel Systems, Inc. SeaConnect 370W: 1.3.34

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1395
• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1395

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