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 perform a man-in-the-middle attack in order to trigger this vulnerability.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.020 (80.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Sealevel Seaconnect 370w
- Sealevel Seaconnect 370w Firmware — versions 1.3.34
- Sealevel — versions Sealevel Systems, Inc. SeaConnect 370W v1.3.34
Weakness classification (CWE)
References
- talosintelligence.com/vulnerability_reports/TALOS-2021-1390 (Exploit, Third Party Advisory)
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.