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.
Published 2022-02-04 23:15:11
Updated 2022-10-25 15:54:51
Source Talos
View at NVD,   CVE.org
Vulnerability category: BypassGain privilegeDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2021-21964

Probability of exploitation activity in the next 30 days: 0.09%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 36 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-21964

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
7.1
HIGH AV:N/AC:M/Au:N/C:N/I:N/A:C
8.6
6.9
NIST
8.6
HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
3.9
4.7
Talos
7.4
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
2.8
4.0
NIST

CWE ids for CVE-2021-21964

  • The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
    Assigned by: talos-cna@cisco.com (Secondary)
  • The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-21964

Products affected by CVE-2021-21964

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