by Kastro
Paper/Archive/CVE-2021-21962

CVE-2021-21962

talos — A heap-based buffer overflow vulnerability exists in the OTA Update u-download functionality of Sealevel Systems, Inc.

EPSS 2%public exploitCVSS 9.0
critical.is priorityof 100
53
CVSS 9.0 (CNA)9.0 / 10 × 3027.0Not in CISA KEV+300.0EPSS percentile 80.9.809 × 2016.2Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
SealevelSealevel Systems, Inc. SeaConnect 370W v1.3.34–CNA

Scores by source

talos (CNA)9.0CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

reftalosintelligence.com/vulnerability_reports/TALOS-2021-1390