CVE-2021-21964

A denial of service vulnerability exists in the Modbus configuration functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. Specially-crafted network packets can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

CVSS v3.1

7.4 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H

CVSS v3.0

8.6 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

CVSS v2.0

7.1 HIGHAV:N/AC:M/Au:N/C:N/I:N/A:C

EPSS

0.71% chance of exploitation in the next 30 days, 51th percentile

Published

2022-02-04

Updated

2025-04-15

Proof-of-concept exploits (1)

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1392

References

• CVE Record
• NVD entry

Related

• CVE-2021-21962
• CVE-2021-21965
• CVE-2021-21961
• CVE-2021-21966
• CVE-2021-21960
• CVE-2021-21967