CVE-2021-21961 — CRITICAL (10.0)

Vulnerability Description

A stack-based buffer overflow vulnerability exists in the NBNS 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.

CVSS Score

10.0

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Sealevel	Seaconnect 370W Firmware	1.3.34
Sealevel	Seaconnect 370W	-

Related Weaknesses (CWE)

CWE-121 CWE-787

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1389ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1389ExploitThird Party Advisory

FAQ

What is CVE-2021-21961?

CVE-2021-21961 is a vulnerability with a CVSS score of 10.0 (CRITICAL). A stack-based buffer overflow vulnerability exists in the NBNS functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted network packet can lead to remote code execution. An...

How severe is CVE-2021-21961?

CVE-2021-21961 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-21961?

Check the references section above for vendor advisories and patch information. Affected products include: Sealevel Seaconnect 370W Firmware, Sealevel Seaconnect 370W.