CVE-2021-21960

10.0 criticalEPSS 2.6%

Critical (10.0) in sealevel seaconnect 370w firmware. EPSS 2.6% chance of exploitation in the next 30 days.

A stack-based buffer overflow vulnerability exists in both the LLMNR functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted network packet can lead to remote code execution. An attacker can send a malicious packet to trigger this vulnerability.

Severity

CVSS 3.1

10.0 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 2.6% chance of exploitation in the next 30 days; higher than 85% of CVEs (scores of 2026-10-31)
CWEs: CWE-1284, CWE-121
Published: 2022-02-04
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

sealevel:seaconnect_370w_firmware

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1389
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1389

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