CVE-2021-21969 is an out-of-bounds write vulnerability affecting Sealevel Systems, Inc. SeaConnect 370W v1.3.34. Specifically, the HandleSeaCloudMessage function improperly handles MQTT messages, allowing an attacker to write beyond a 0x100 byte buffer due to incorrect string length handling. This vulnerability carries a CVSS score of 8.1 (HIGH), indicating a severe risk with high impact on confidentiality, integrity, and availability, and can be exploited remotely with high attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.3.34CPE matchmatch criteria | cpe:2.3:o:sealevel:seaconnect_370w_firmware:1.3.34:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.