VulnerabilityModified

CVE-2021-21964

A denial of service vulnerability exists in the Modbus configuration functionality of Sealevel Systems, Inc.

HIGH 7.4EPSS 0.71%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.71%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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 3.1: 7.4 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
EPSS: 0.71% probability · 52th percentile
CISA KEV: Not listed
Weakness: CWE-284, CWE-306
Affected: sealevel/seaconnect 370w firmware
Source: talos-cna@cisco.com

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1392Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1392Exploit, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.