CVE-2021-21967
MEDIUMCVSS 5.9/10EPSS 0.71%
Last modified
CVE-2021-21967 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. An out-of-bounds write vulnerability exists in the OTA update task functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. EPSS estimates a 0.71% chance of exploitation in the next 30 days.
Description
An out-of-bounds write vulnerability exists in the OTA update task functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted MQTT payload can lead to denial of service. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Sealevel | Seaconnect 370w Firmware | 1.3.34 |
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1394Exploit, Third Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1394Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-21967?
An out-of-bounds write vulnerability exists in the OTA update task functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted MQTT payload can lead to denial of service. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.
How severe is CVE-2021-21967?
CVE-2021-21967 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.
How do I fix CVE-2021-21967?
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-2021-21967?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST