What is CVE-2021-21962?

CVE-2021-21962 is a high-severity vulnerability in Sealevel Seaconnect_370w, classified under Heap-based Buffer Overflow. CVSS score: 8.1/10. Published 2022-02-04.

How severe is CVE-2021-21962?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in Sealevel Seaconnect_370w

CVE-2021-21962

A heap-based buffer overflow vulnerability exists in the OTA Update u-download functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A series of specially-crafted MQTT payloads can lead to remote code execution. An attacker must…

Vulnerability class: Buffer Overflow

EPSS: 0.020 (78.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Sealevel Seaconnect_370w
Sealevel Seaconnect_370w_firmware — versions 1.3.34
N/a Sealevel — versions Sealevel Systems, Inc. SeaConnect 370W v1.3.34

Weakness classification (CWE)

References

talos-cna@cisco.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-21962?: CVE-2021-21962 is a high-severity vulnerability in Sealevel Seaconnect_370w, classified under Heap-based Buffer Overflow. CVSS score: 8.1/10. Published 2022-02-04.
How severe is CVE-2021-21962?: High severity. CVSS v3 base score is 8.1 out of 10.