CVE-2021-21961
CRITICALCVSS 10/10EPSS 2.47%
Last modified
CVE-2021-21961 is a critical-severity vulnerability rated 10/10 on the CVSS scale. A stack-based buffer overflow vulnerability exists in the NBNS functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. EPSS estimates a 2.47% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Sealevel | Seaconnect 370w Firmware | 1.3.34 |
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1389Exploit, Third Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1389Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-21961?
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.
How severe is CVE-2021-21961?
CVE-2021-21961 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 2.47% probability of exploitation in the next 30 days.
How do I fix CVE-2021-21961?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-21961?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST